Technically its is all these knives. And out of those it is the 5 skiving knives at the bottom that I'm most respectful of. Not only are they razor sharp but when skiving you aren't cutting directly down to the work surface and I've caught myself putting my hand in really silly places before. Yet, never injured myself even once with any of them... yet.

But in reality the only things I've properly injured myself with have been a stitching chisel and a belt/strap cutter pictured below. The chisel I was using, stupidly, to go through that super thick part of the pouch its resting on. Thats a whole centimetre of layers of thick, resin backed leather. And I didn't have a pull board thing yet. It refused to come out and when I eventually freed it, I scraped it against the web of my left thumb making a big scratch up my hand that bled profusely and took forever to heal.

The belt cutter was the worst cut. I tried to change the blade... you lift that little red cap but the blade is actually secured within it. It is incredibly stiff and when I pulled it the whole thing gave way and I sliced my thumb open on it. That took a really long time to heal and even longer to stop being sensitive, so even when healed I couldn't do anything because it hurt to much to use a needle.