I OC a lot. Never had a LEO say a word though I have had a few people give me the old, "Good Lord, did you know your gun is cocked?"
One man actually approached me and told me he was glad to see me carrying a 1911 cocked and locked like it is supposed to be. Appearance is everything when you OC. If you look like you just pulled a three day drunk right after a three day cocaine high, then yeah, you might make some people a shade nervous. If you are clean and neat and decently dressed the majority won't even notice your weapon. I agree that "setting up" confrontations is idiotic, and maybe a little dangerous. Never know when your going to "catch" a nervous rookie. It will be hard to prove your point (whatever that point may be) if a probie puts one in your boiler room.
Bottom line: if you're going to OC, act like somebody, don't provoke cops, be courteous and gentle with anyone who expresses fear, and you'll be fine. Oh, and don't constantly touch your weapon.