I don't know to much about it as a weapon but I have used a Leatherman as a doorstop. A weight for getting a line over a tree branch. Stabbed into a tree as a hanger for a candle lantern. A plumb bob. I have wrapped thin Kevlar line or wire around it so I could pull without cutting my hands to shreds. Lacking an icepick for busting up block ice for drinks I have used the plier tips.

Uses are only limited by imagination.