I sent all my busse/kin blades to Nate for some sharpening. So, all I have here is an AK and a Battle Rat. BUT, I have used some knives that normally don't get used. Like my full size Benchmade Nim in M2. It's a great blade.

Not a busse, but great in it's own right. I actually like M2 for non-hard-use knives. Although M2 is tougher than most steels when the heat treat is right. I hit a little cement today (I think) with the edge of my Nim and had NO damage that I can see.