If you're looking for small, kydex typically won't give you the best option. Leather or nylon is better. Kydex always has that big ole' seam that's sealed shut, typically with a ton of rivets in it.

Maybe that can be changed if you have your own set, but personally I hate every kydex sheath I've owned. Even the cheapie plastic Mora sheaths are at least small and lightweight.

Oh, sorry I don't have any kydex suggestions for you.