You are overthinking this way too much. It's a knife, buddy, not a Ferrari. You either like it or you don't, nothing wrong that. You'll either use it or you won't, nothing wrong with that either.
I carry mine on my belt all the time, in banks, in daycares, and to a nice restaurant tonight. Never had a problem, your choice though. I doubt anyone will ask about it...
Regarding the warranty, I don't know. I think this was asked in the other thread somewhere, but I can't remember.