Worth it alone for a quieter card and cooler. As long as you dont get one of those noisy pumps.

If neither is bothering you then dont bother.

The pump whine can be loud, but overall, it's worth it.

With the stock triple fan cooler on my 2080 ti FTW3 Ultra, I was getting mid-60's to low 70's with stock settings and closer to 80C with a +110 core and +800 memory overclock. And that was with an aggressive fan curve. It was quite loud. Paired with a 3440x1440 120hz monitor, during long gaming stints, my core clocks would hover around 1950-2000MHz, on average. FPS in Division 2 would bounce around between 75 - 100.

Since switching to the hybrid cooler, with the same overclock settings, my card now hovers in the high 50's during a 2-3 hour Division 2 session. My core clocks now hover between 2070-2080MHz and my FPS hovers between 100-120 and almost never drops below 90. It achieves all this with a pretty subdued fan curve as well, so it's significantly quieter. 

As for the loud pump whine, there are a couple of threads around here discussing it and Jason from EVGA is currently looking into the issue. Many believe it's due to the pump running at 100% all the time. Some have rectified the noise by plugging the pump directly into the motherboard and decreasing pump speed to 80% or 85% in bios or fan control software. Those people have reported that this makes the pump near silent while only increasing temps by 1-3C.

With that said, the noise does not negatively impact performance and the hybrid kit definitely drops temps considerably. In addition, Jason from EVGA is currently looking into the pump noise complaints. Regardless, I'd still recommend the kit. I'm happy with mine and plan to keep it in the system until I build the courage to do a full custom open loop. 

I'm pretty sure my 2080ti wsnt anywhere close to 2200mhz. In fact I think it would boost to 2115 and then drop from there with the stock cooler at 100% fans as I never let them run anything other then 100%

And that's even with AB.

Now I dont know what the memory would do prior as I did not try before the block.. 2205 and 8450mhz on the ram afterward installing the hydro block.

Water cooling always encreases overclocking for me.. atleast getting one notch higher for clock.

But the silence is always worth it.

If a little whine doesn't bother you the Hybrid Kit does work well, keeps my RTX 2080 FE nice and cool, I don't think the pump is necessarily crapppy, it's just noisy.  

Mine been fine score in Port Royal with the stock air fans was 9530 with change the kit took the score to 9606 and put i in the top 100. Card run cooler and the pump is very quite on mine. As  i type this its at ideal is 22.0 c and runs about 29.0 c on air. Under load it runs close to same in difference 7.0 to 5.0 c cooler. If you don't overclock is it worth the money ???.If I really wanted the card to run the best full water block is the way to go. I just Don't like draining the system any time you work on it.

For GTX1080Ti/RTX2080/RTX2080Ti Hybrid kit is best investment.
That's perfection, better temperatures on graphic processor than any cooler and all heat go out of case.
No better investment if we talk about high end graphic card series.
For gaming and every day use is not important is it temperature of graphic card 55-60C on AIO or 45-50C with full custom loop.
 
I used AIO coolers from beginning and I used on them and I can't imagine high end computer without them or custom watercooling. 
 
 
 

The pump noise at 100% is way louder / more noticeable than fan noise. It's a buzzing sound like a fridge. So if for some reason you can't run the pump cable to your motherboard/fan controller/whatever I would definitely not get the kit. Reduced to < 80% you can't hear it and it doesn't seem to affect the cooling.
 
This is consistent enough that I don't think it's just 'bad' pumps out there doing this. I think anyone who can't hear it is already running it on lower power somehow or already has a ton of noise in their computer area. 
 
 

I just sent in my RTX 2080 Hybrid for step up and didn't have any pump issues with noise. It performed well, but it just made me want an actual custom loop. Will be going with dual 420 mm rads soon :)

Nope no trouble installing, but the pump did start making a grinding noise, I sent it back for rma

djayyy
Recently installed the Hybrid cooler on my 2080ti black. It has made a huge difference to its performance. I now feel like i have the card I should have had when I bought it. For me the Hybrid cooler is well worth it, however only because the stock cooler on the 2080ti is not fit for purpose. 
 
The pump on mine is very quiet, hopefully it will stay that way. 
 

Now understand why I say to people liquid cooling GPU is more important then processors.
Mid overclocked processor could stay cool even on Noctua NH9 series, but high end GPU is close to 80C even with best Air Coolers.
On my Poseidon card boost 30MHz higher on Liquid Cooling.
How recognize that it's water inside I don't know because in benchmark test never go over 75C on air.
Only if boost clock over 70C change and allow 1985MHz, and below 60C boost to 2012MHz.
Then if you play games and temps stay below 60C card work better.

M1aSocom2
Yes it is. You can hold over 2100 if you stay under 50c, which is possible with proper case cooling, the hybrid kit and obviously silicon lottery plays a part. I maxed out last night around 48c in BFV. Witcher 3 stays around 45c. Most benchmarks are around 45c with +175-195 and +1000 on memory.  Before it would go into the 60's and 70's, which would throttle the card. I noticed in benchmarks it starts at 2250 and throttles back to around 2130 even at that low 45c temp, but it stays there. I am considering investing in a complete loop. Putting everything under water will be nice. Corsair has a decent looking system that just came out. Need to decide before the 3800x hits.

  I will probably grab a intel block from them, dependent which CPU/socket I upgrade to when the new stuff comes out.