I can't think of any generic nylon sheaths for smaller knives (or bigger for that matter). I mostly have knives in the 3-4" range...for EDC / hunting.

The problem with Kydex is that you can't re-use it for the next design that comes out. But, if you go that route...you might contact BuyBrown (or others), sometimes they post sales on the BladeForums for overstock of certain designs...good deals to be had. It's common, especially on the limited releases such as the War Dog.

I have a good Rainwalker Pouch sheath designed for an SS4, but I use it for the WarDog for now while it's official sheath is being made *taps foot*. I may go Kydex for the 5-11 though!!