IMHO, the living quarters clause applies only to recreational vehicles. Before 2005, it was illegal to carry a handgun, "illegal" knife, or club in a motor vehicle. The legislature in earlier times wanted to allow people to have weapons in their RV living quarters, but not in the cockpit.
The manager of a business that serves alcoholic beverages is specifically permitted to carry a weapon because 46.02 makes it a felony offense to carry a weapon in a place where alcoholic beverages are sold.
The exact language of PC §46.15(7) is
I don't know the legislative history of this clause. Something must have happened that made it necessary. Texas law is a mess of conflicting amendments.holds an alcoholic beverage permit or license or is an employee of a holder of an alcoholic beverage permit or license if the person is supervising the operation of the permitted or licensed premises.
One could note that employees of gun stores and ranges frequently carry openly. They are never prosecuted (unless one shoots another, as has happened).
- Jim