The caps feel nice to the touch and look great. I like the lower profile and uniform shape for typing. Keys like the F and J and Num 5 are marked by being lower and more concave which feels a bit different than just having a nub, which is a bit unusual but doesn't seem to throw off my typing. The shorter caps also means slightly less interface between them and the keyswitch which makes them a bit "tippier" and "wobblier" than taller keycaps, where they can end up slightly tilted instead of perpendicular. In practice it doesn't hurt anything, but with the lighter color as well, you may notice the keys don't always sit perfectly aligned.
If used with backlighting, despite the caps being opaque, it does provide a nice ambient glow effect as the light fills in the gaps between the keys. The red Esc key does let some light bleed through, though, which makes it stand out. The contrast between the large printing and the light gray keys makes them nice and visible even in low light but the darker gray caps are pretty hard to read.