IMHO, You should just assume everyone is armed at an exchange springing from email. We already know everyone has something of value (something to sell; something to trade for it). Why wouldn't they be armed?
As far as other options, my favorite is a polite gun buster sign like a red circle with a line through a gun silhouette. Text underneath something like "No open, concealed, or illegal firearms. Thanks MGMT." This communicates to those carrying legally that they are not welcome, but does not carry weight of law. It lets them know that if they are discovered, they will formally be asked to leave (thus triggering the law). Kinda gives them the friendly heads up to respect your wishes without threat of legal action. Also gives notice to the illegal carry with force of law. Further, it allows the sign to be smaller than .06/7. Saw it at a restaurant, and thought it was clever, communicative, and respectful.
The general sentiment here seems to disagree with your "OK for me, but not for thee" point of view. Perhaps you might like to review the conviction rates for LTC holders on the DPS site. It's astonishingly low. "Thee" are overwhelmingly good people.
acronym 5/17/2019 6:59 AM