Alright let's get the good out of the way first - these keycaps feel great. The dish on the top is perfect, the texture is nice nicely tactile without feeling overly grippy, the homing bumps are easy to find yet unobtrusive, they're just an upgrade over standard caps in nigh every way. If you like the feel of typing on choc but struggle with the spacing as I did or just prefer more dished keycaps, these are nice.
Now onto why despite all that, I can only give them 3 stars - they don't arrive in a useable condition. The description here states "the fit of the stems into the keycaps are a bit tight," but the package comes with a slip of paper that expounds more on this: "If the stems are not reduced, it can make removing them from the switches very difficult, and possibly damage the switches from the force required to remove them. LowproKB...cannot be responsible for damage to swiches [sic] if you choose not to modify the stems."
The reality is that it will rip off the top half of your switch. So you have to make 4-12 passes per keycap with a knife just to use them. I was about 6 passes per switch due to the I-beam shape of the pegs, or over 250 total for a 40% board. That's...a lot. To use a simple product, which I expect now is also not warrantied due to modification.
My problem isn't having to do this. My problem is that it's wholly undisclosed until they arrive. Would I buy them again? Maybe. But I really wish I knew of the extra 1.5hrs it'd take to use them beforehand.