First off, I just retired after 42 years in law enforcement. I've worked city, county, state, and federal level at one time or another, and had a great career. I am an advocate of citizens bearing arms anywhere, anytime, and have actively promoted training in the state where I came from.
Although the state where I retired is an OC locale from side to side, top to bottom, I have never really understood the mentality for doing so. I can see that one may open carry for hundreds of reasons, but I also am of the opinion that discrestion is the better tactic, and surprise in a hot situation can often win the day.
For sure, OC can also stop some situations before they occur, or at least tame them down a bit, but OC for no good reason can also bring out the "gun slinger" in the Adam Henry who is whacked out of his mind most of the time. Hell, even Wyatt carried his coat over his weapon most of the time. Uncovered when he needed it. Seemed to work back then, and four decades of living with weapons and bad guys five or more days a week has never given me cause to believe otherwise.
I guess that what I'm saying here is, when I see OC, I assume the person has a good reason for making that choice, and I will respect that. But I'll probably keep an eye on that person while around them, just in case their six pack is short a can or two.