I just realised I was wrong there. I got LPF and MBK keycaps mixed up.
LPF profile has MX-style cross stem, so it will fit on MX and Choc v2 switches. It will fit the UHK, although as @pcooke9 suggested, it’s really more designed for low profile switches and - while physically fitting - it will sit quite high on a regular MX switch.
I don’t have LPF caps, but here is a photo of XVX Skyline caps (the black ones) vs. Cherry profile sitting on a UHK60v2. You can see that the flatter XVX caps do not cover the light source as much as the Cherry ones. It’s even more pronounced when you press them.