There's not much I can say to describe how these feel besides being smooth and enjoyable to type on. I don't think I will use these in any of my builds, but they are nice to have around in case I would like to use them in the future.
Sound and feel of these switches is substantially different than 'normal' tactile switches. While they are just a little scratchy, the bottom-out is soft and satisfying. I find these especially useful for larger keycaps and/or ones that use stabilizers. If you construct a keyboard for late-night typing, I recommend these Silent Shrimps!
I use these on a qk 100 that I brought to the office. I will say they were very pongy our of the box, but it's not terribly noticeable when you get the board fully assembled. They feel and sound great and are very quiet.
Personally I found the silent shrimps to be really nicely weighted with a nice tactile bump. Similar to the Boba U4s in many ways - which to me is a good thing.
Shine-through is great, sound is very discrete and my only complaint is that I could hear a fair bit of spring ping on some switches - easily resolved with a quick lube.
Totally recommended
confuzyonPersonally I feel that the U4's are a little heavier (I believe mine are 67gf) and have a more pronounced tactile bump while also being a little quieter.
The Shrimp feel much lighter overall and the bump is much more subtle to me.