I think if you OC because you have to (transport of firearm) or just because you want to is fine. I do not like when folks OC to just prove a point that it is their 2nd A right. What is mean is an incident I saw in NH over the fall. In a National Park loaded with leaf peepers (tourist) a college age kid had an AR not on a sling with a magazine it. A couple stopped him and asked why he was doing that in public. Now, this couple was anti 2A and trying to start something. But this kid was hoping for this confrontation. He said I came here to show everybody I can do what I want or something to that effect. Point is, he was being a jerk and was trying to get a rise out of people.