LIkewise, I've always carried a pocket knife. Used a Puma Major for a long time till I found a Buck spring assisted recently . I really like it, since I can open it with one hand.
I've also lost one to airport security --- since I always carried it, I forgot I had it till I was going thru the scanner. That's why I don't buy the $100 + models.
I certainly don't intend to use it to cut anyone, but I guess I could....