I think I may not have communicated the main point to my question very well. That's my fault. I'm not as interested in the mindset or preference of an individual, as I am in the actual law. The reason I asked about why people do what they do was to see if it's because of how laws are written in different open-carry states.
Then, yes, people do what they do based on the laws of their state, or the state in which they are carrying.
See, that's my point exactly. There should be a straight answer to that question.
Do you know what totality of circumstances means? In a nutshell, it means that there is no single deciding factor, that one must consider all the facts, the context, and conclude from the whole picture whether a citizen acted under color of law.
For example, if you were simply reaching for an item on the top shelf at a store and your shirt rode up exposing your firearm, with no other circumstances surrounding the act, it would probably be construed that you were acting legally.
Add this factor, this circumstance to the situation. Just prior to you reaching, you were in an argument with a guy, a heated argument where you told the guy he'd better not mess with you. Then you reached up and "accidentally" exposing your firearm. Would you agree that might be looked at as an aggressive action on your part? Could it be interpreted by the other party or a third party to be an escalation of the argument?
What the "local customs" are wouldn't hold up in court if an over zellous police officer decided to make his own rules and overstep the law because of how he personally feels about a situation.
Local customs would include the attitude of law enforcement and their known reaction to people legally carrying a firearm. If there are 100 instances of police encounters with people legally carrying firearms, and 99 of them ended well, that would illustrate the local custom. If the 100th encounter does not go well, then it deserves more scrutiny as to why it was different than the other 99.
I know it is going to be different from state to state, but I really just want to know this: If it's an open-carry state and you have a CC permit, is it against the law if you're carrying concealed and it accidentally shows?
Nothwithstanding any circumstance to the contrary, it should not be illegal.