FWIW, your current understanding of Texas firearms law and enforcement is dangerously insufficient. I strongly advise you not to carry at all until you learn much more about it.
EDIT: Should we get a stickied Texas Carry Law post up? A number of the other state forums have them. Answers to his questions are in the first page or two of posts, but just to be super extra helpful to people who can't bother, maybe a sticky would avoid some of these threads in the future.