I am one of those that doesn't care what other people think......if I need a knife, I will use whatever I have in my pocket if the provided 'knife' in a restaurant is not doing the job.
In one instance, I was asked by a friend of mine(who's gotten after me sometimes for carrying a knife) if he could borrow my knife when he got frustrated with the restaurant cutlery that he had.
Remember, a sharp blade is a safe blade.
"A man who is "of sound mind" is one who keeps the inner madman under lock and key."--- Paul Valery
Survive, Adapt, and Overcome...