I have a couple of models with the Besh Wedge. The Applegate Fairbarn RogerWilco mentioned above, and a little BokerPlus dagger. Being a smart alec, I threw the little BokerPlus into a tree and bent the heck out of the thing- it is very flimsy. Plenty tough enough to stab somebody in the kidney with, but not for much else. The Applegate Fairbarn I have is very nice. Mine came with a nice, mirror edge all around. It is an interesting piece. It wouldn't be very useful as a field knife, but that's not what it's for. It's a dagger, meant for shanking folks. For that purpose, I suppose it would do very well. You aren't going to break the tip on that thing, that's for sure. The tip is the full thickness of the blade, so there is a trade-off of penetration ability for tip strength. It would be like stabbing somebody with a screwdriver, basically. I did a bunch of test stabs into cardboard, and the Besh-Wedge Applegate Fairbarn doesn't penetrate at all with the ease that a traditional dagger does. But it does penetrate- you just have to stab like you mean it. And there is ZERO chance of the tip breaking.
The sheath on mine is typical production kydex. It is not too bad, actually. Retention is good, but the knife comes out easily if you push back on the molded-in thumb break. I have seen way, way worse.