And here is another thing to consider (just to throw the thread off-tilt a little more):
Some businesses will tell you that they don't care if you carry a gun, but you can't carry it unconcealed. That was the outcome of the pool hall I was arrested at. No sign, just causing problems one at a time for people.
How that can be enforced within the laws, I don't know, and I believe there are shades of unconstitutionality all over our laws on these issues.
Based on my reading of your pool hall arrest documents, the problem was the cops.
The person who controlled the pool hall was ok with you OCing once you explained yourself. And if I remember right, you offered to leave or conceal if he required.
The thing that gun people need to recognize is that when your right to self defense conflicts with a private property owner's right to control their own property, property rights win simply because you have the option to go to another pool hall. However, they need to NOTIFY you. Whether its with a sign or simply a verbal request to cover up or leave.
Private property owners can be arbitrary and capricious as to who they allow entry to. He could have given you a pink hat and said that if you wanted to OC, you needed to wear a pink hat. All perfectly legal.
I think we both agree that if the same situation happened today, there would not be an arrest.
I do think there are some constitutional issues at play when the state restricts entry under 29-28(e) simply because the state is a monopoly and you can't take your government business to another government.