To answer your second question about how a CCW permit affects how a court views you in a fistfight:
I can sorta speak from experience there. Basically, I pushed four assailants away from a downed and injured beating victim, and then backed up with him away from the assailants. Two of the four loonies then pulled hammers, and I put my hand on the pommel of a large (5.5" blade) folding knife in a belt sheath, *without* drawing it yet because the nutcases weren't advancing and were at about 21ft range when they pulled weapons.
During the police interviews afterwards, they knew that I had been armed with that knife yet had avoided pulling it (lotsa witnesses). (I had voluntarily surrendered it at the door to the PD Station.) They thanked me for NOT drawing, and other than taking my statement as a witness to the initial assault, I faced no legal problems at all. In talking to the DAs later as a witness, they had a similar positive attitude to the cops.
(Attitude matters here. Basically, I calmly explained that I had the knife on me, I explained where it was and that it was both legal and NOT drawn in the recent altercation. I allowed them to draw it versus frightening them. They handed it back to me as I left.)
In other words, if you've got a legal gun and you DON'T pull it because things haven't gotten that hairball yet, you'll end up in BETTER legal shape, not worse. Remember that my incident was in the highly hoplophobic SF Bay Area where gun carry permits are obtained almost entirely through connections and campaign contributions, and the carry of monster cutlery isn't exactly common.
And you're worried in TEXAS!?
Dude, relax
.
Jim