I use it for random tasks at least every other day. It's great to open dip cans, cut strings off clothes, open stupid plastic blister packs, etc. It even has a glass breaker and seat-belt cutter should I or someone else be trapped in a car. I carry it while scuba diving in case I get caught in fishing line (the seat-belt cutter is great for not having to open a blade under water.)
Point being, I have plenty of good reasons to carry it without working with food. A good knife is always handy. Even my high school recognized this, and they never reprimanded anyone to my knowledge for having one, and probably a third of the guys carried one on their jean pocket. My school had the #1 FFA in the nation, so even the school recognized that these guys had them for a good reason. They would use them for small tasks all the time in the shop or, for example, to cut baling wire with animals.
I have never cut anyone (except myself
) or threatened anyone with it. Nobody could ever argue to me that my knife is a weapon; it simply isn't. It's a tool.