ZX, I would think the 6 inch nylon sheath should work, but If you want a kydex one made, contact Rainwalker, Azwelke, mashed cat or David brown (buy brown sheaths) and work a deal with them to make you a sheath and ship them to you together. They all do most excellent work.

If you prefer leather,check out Rainwalker or Savage sheaths. Armorall leather also makes some nice leather as does Chuddy Bear.

There are others but these are the ones I remember just off the top of my head.