The OC's I've met that appeared like they OC carried ALL the time--struck me as being rather odd people when I talked to them.
I'd agree with that assessment. ...Massively, for some people.
One of the biggest open carry proponents that I have ever personally known and had substantial interaction with was a very strange person. I worked with him for 4 years and never did figure out what was wrong with that guy. He just wasn't right.
Eventually, he decided that he was going to 'retire' and live off of his savings account until he ran out of money. He figured he'd be good for 5-7 years, before having to work again. During his time off, he planned to be as active as possible in 'spreading the gospel' of open carry.
He vanished for a few years, before showing up at a local swap meet, selling swords, knives, thrown weapons, maces, and bat'leths (Klingon weapon from Star Trek). He was a regular fixture there for another couple of years, and was renowned for being very strange and completely unpredictable.
Then, again, he vanished. No one heard or saw anything of him for about a year; until he made the news for attacking two police officers with a sword, after they tried to disarm him for officer safety. He just kept screaming, "I have the right! You can't take my weapons!"
(I can't find a link to one of the articles at the moment, but his attack was in 2014 in the Florida panhandle. Ironically, one of the police officers was a former coworker of ours.)