If it helps (and I am no lawyer) -"holster" is not defined in the Texas law. So, if you have your LTC and you have it in what can be considered a holster, you are, in theory, fine. I, however, would remind everyone that if you are carjacked, you likely won't have time to grab your gun and take it with you, so carrying it on your person should be considered. (But I am not telling anyone what they should be doing, just giving you food for thought!)