Very interesting.
Do we know if they work with Kailh Choc V2 low profile switches?
It would be a sweet combination for a low profile keyboard. But some keycaps are slightly to narrow inside and sort of rubs on the case of the switches.
So the SLK profile is designed with MX-style switches (regular profile/height) in mind, but I've also tested SLK out with Kailh Choc V2s, as well as several other low-profile switches.
Kailh Choc V2s, GTMX Mids, and Gateron KS-27s all had no interference with the switch, but it would collide with the plate. So it could be used in plateless builds with these switches.
Tecsee Mediums were the only switch I encountered which had interference with the switch itself.
And of course, I've tested it with a wide variety of regular-profile MX-style switches from pretty much all the major manufacturers. Any of these switches should be perfectly compatible with SLK in any build, plate or plateless, any stabs, etc.