CS, the body of the clamp is metal with a plastic screw to told the guide on and to tension against the blade. I don't see it becoming an issue for some time.
I do believe it would also hold a kitchen knife.
WWR,
, the original question posed by CS was "So what do you guys use and what do you keep in your pack?"
v0dka,
D2 steel comes in at HRC 54 - 61, high quality axe heads typically come in at 55 while high quality plane irons fall in around 60. Chisels can go as high as 66... so will a stone cut it? Absolutely, there is nothing special about that steel a side from the vanadium.