I have yet to meet anyone in real life that worked trades that didn't carry a cheap piece of schitt... No lie. I've never seen anybody on site who had anything better than a Coast or S&W, or something comparable.
You're dead on with the second paragraph. Cut people live, stabbed people die. Period. It's a fact.
Assisted knives are a huge plus for defense? No. Not even close. Hell, with some assisted opening knives I have to position my hand just right, find the flipper (or the stud), hold my tongue just right, etc., then flick it open.... And hope it opens all the way. Try doing that under duress.
The American tanto thing.... Eh, I've been thinking about it a while. Going over it in my head, remembering my experiences with them. I honestly don't know wether to call BS on that, or call you a genius.