I have a couple of the MPCC standard length cases and they are quite nicely made. You are right about the unusual belt attachment. I can just force my GPS in one and attach it to my backpack strap. I should get the larger one though as the tight fit sometimes presses on the mouse joystick on my Garmin Legend.

Good luck with the other stuff. I would definately put a bit of cord or a ranger band around the P51 cutter if I carried one in my pocket.