You can make it work in a Spec-Ops sheath but you will need to take the insert out, drop it in some boiling water for about 10 seconds or so, put the knife in it while reshaping. You can keep putting it back in the boiling water until you get it like you want it and then put the insert back in.

Rainwalker's kydex is by far the best I've seen for the DMCG or any other knife for that matter. I have kydex from every maker you can imagine, and Jeff's(Rainwalker) are the best balance of style, toughness, and rentention without being formed to tightly to the blade itself than ANY I've ever seen....

The D-Mutt and Rainwalker sheath pictured below fell about 35ft to the rocks during a Fast Rope insertion and still looks like it did in these pics <img src="/ubbthreads/images/graemlins/ooo.gif" alt="" />.