The "Please Don't Open Carry" signs

[Texas1999]

So I noticed this sign on the door of a restaurant I was about to walk into the other day. Correct me if I'm wrong, but these signs are meaningless and it is not a criminal offense to openly carry past one if you have a LTC, since only a written notice compliant with 30.07 is enforceable...right? However, I assume once inside an establishment with an unenforceable "please don't carry" sign, a manager might then give you oral notice that entry on the property by a license holder openly carrying a handgun is forbidden, in which case it would then become a Class A misdemeanor under 30.07(a)(2) if you did not leave.

[Keith B]

Signs already being discussed here http://texaschlforum.com/viewtopic.php?f=129&t=82451