This week I received a concealex sheath for my CRK Shadow IV From ProEdge. It was made by On Scene Tactical. Fit and finish of the sheath is great. I also appreciate the retention on this piece, it will come out when you want it. The design is maybe slightly different form other sheath designs, in that you can't push the sheath off with your thumb. you can use your index finger to 'help'the knife out. This does provide for a more secure grip on the knife if you pul it out, and protects you a little longer from the edge. Technically, you can just pull the knife out with great ease, but I am just used to push the knife out as well in a draw. You can see a picture of the sheath on the ProEdge web site, http://www.cgocable.net/~proedge/sheaths.htm . Overall, I am very happy with the sheath, it really turns this knife into a serious concealable tactical knife. Murray from ProEdge was extremely pleasant to deal with, he held the sheath back for me to get the means to pay for the sheath (I needed to apply for a check etc..). Kudos to On Scene tactical for a fine product!