I work for a car dealership. Our entire service and parts departments' staff carry pocket knives, clearly visible by the pocket clips and gaping cargo pockets. I went in one day, on a day off, with my Coast 5" fixed blade Bowie to deliver a car to my aunt. A few fellow sales people commented on it, mostly just jokes ("man, you're Aunt must be one tough customer" and the like), but they also know I carry a gun daily to work. Two of them are women, one ex military, the other who just recently shot her first gun with her son during some sort of parents appreciation day during his college's frat week. Both are like mother figures to myself and a couple others there. Both said if it were anyone else they might question it a bit, but both admitted feeling more comfortable knowing that I was carrying. So seeing me with knives daily they just see it as it is, another tool for their tool man Josh.
I'm the guy who always has the tools everyone else needs. Flashlights, power drill, bits and extensions, tape measure, and a few other odd and ends. We're a very tight knit group of people, so we know each other's after work activities and ongoings. So I'm well known for being the outdoor guy and nifty tool collector. In fact I've given at least each person there one or two knives that I no longer wanted, being replaced by the stuff I've bought since participating here recently.
I get away with a lot, partially because of my very calm, cool and kind demeanor, but also my extremely unintimidating and almost feminine look. I'm tall but skinny, have very long eyelashes, and soft facial features.