3. Pull a gun for no reason, and I'll probably assume you are trying to rob the place, and I'll shoot you.
Snap judgements made on assumptions, yet another problem curtailed by not allowing concealed weapons. Should something like what you mentioned happen, the family of the person you shot, maybe killed, would sue you for every penny you have. You would most likely lose you business and most everything else. Until you can remove the possibility of stupidity on someone else's part, this is just something to deal with.
It isn't whether or not the guy hung signs that forbid concealed carry in his shop during normal business hours. He didn't. He simply asked that no concealed weapons be brought into his establishment on this occasion. I take that to mean that at any other time you would be welcome to carry in his establishment. Therefore he isn't stomping on your rights. He is simply asking something of you that as the owner of the business, he has the right to ask. If you don't want to respect his wishes, on his property, go home. Would it be a little bit of an inconvenience? Yes. Would I maybe be a little vexed? Maybe. But my point is that he is justified in his actions. His actions don't show that he is antigun, freedom, or anything else. He's just looking out for his best interests. I might let him know I wasn't happy about it, but I wouldn't neccessarily take my business elsewhere. Now if he did hang signs forbidding concealed carry in his shop during normal business times, I most likely would quit shopping there.