Texas SIGman once again astutely observes:
Arguments in another thread aside, I'd consider the no weapon clause on the registration form "notice" as required, therefore no sign needed for registered patients since you were already given notice when you checked in.
I do believe that some poor, or at least misleading, advice has been given here by some others, but I see nothing to be gained by taking names.
Some of the confusion might be cleared up, I would think, if there wasn't this hangup on whether or not a sign is "valid." I am speaking of confusion on the part of administrators, members of this forum, sadly, some CHL instructors, and the common citizen, whether he has a CHL or not.
"The sign," or "the 30.06 sign" is intended to give notice that a person having the authority to do so does not want you to carry into the premises if you have a CHL. Is the sign "valid" to communicate that thought to you? Of course.
Does a sign not complying with 30.06 give you the same degree of notice? For example, if it is in block letters only 1/2 inch high. Obviously this sign communicates that thought to you as well. Both signs are "valid" for the purpose of telling you that someone having authority over the premises doesn't want you to carry into the premises.
What is the difference? The difference is whether or not you have committed a Class A misdemeanor for criminal trespass if you ignore the sign and carry into the premises if you have not otherwise been given valid notice.
As pointed out by Sigman, the 30.06 sign is not the only way to give effective notice, the violation of which is criminal. "Effective notice" can be given by the 30.06 sign, it can be given orally, e.g. "Hey, Bubba, you cannot carry a concealed weapon into this building even if you have a CHL," or it can be given by providing you with a card "or other document" on which is written the 30.06 language, and in the latter case it certainly does not have to be printed in absurdly large letters.
I have gone at some length here in order to make one simple point, which clearly is not understood by some Texas THRs. A sign which does not conform with 30.06 does not necessarily mean that a CHL holder can carry concealed into the premises. Broad statements have been made to that effect, depending on the bumper-sticker words "valid sign." Those two words do not dispose of the question.
Best,
Jim