Neither of which can be considered to be behavior that would make a reasonable person concerned that an act of violence was about to occur. Something that CANNOT be said about walking into a place while holding an AR-15, given recent history of mass murder incidents.
I don't know about you, but if I'm sitting at a diner and somebody walks in holding an AR-15 (not just slung over the shoulder, or better-yet in a bag, but HOLDING), I'm going to react the same way as if somebody walked in holding a handgun in his hand, namely assume that a robbery or massacre is imminent.
One of these days, one of these open-carry idiots is going to walk into a place holding a rifle, somebody is going to become alarmed enough to draw and blow the guy away, and if I'm on the jury I WILL NOT VOTE TO CONVICT, on the basis of reasonable self-defense.
So what is an acceptable carry method for a rifle or shotgun carried for personal protection? Because the states involved have made openly carrying a sidearm impracticable. This is a legal form of protest, the gun banners will act by outlawing it, and then we can take them to court with a bona-fide cause for action which isn’t already blocked by illegitimate and ignorant precedent.