TexasCHLforum.com

I think Speedsix has the basic policy down, especially if you read the law the way CBR600 quoted it.

You are legally required to provide the DL when you are asked for your DL/ID AND when you are carrying a pistol on or about your person. But the general policy most on the board advise is to give your CHL over anytime the officer asks for your DL, whether you are carrying or not at the time. It is basically one of those ways to go along and not cause any surprises for the officer. But if you are just talking and he asks your name or address, there is no reason to give him the DL or CHL at all.

And if you think you are being investigated for something, you might consider carefully volunteering the information. I like the way Speedsix put it because one of the problems with doing this is that it can be taken the wrong way and seen as possibly threatening if you do it wrong. Of course, I also do not argue with the general advice on the board of not talking with the police when they are investigating you. If you search for those threads, you can find all of the reasons for and against any cooperation and make your own mind up.