Haven't checked on the knife laws in Texas since I recently moved here. But I carry a Benchmade Griptillian with the Axis locking mechanism that opens about as fast and easily as any folding locking knife I've owned, and that's quite a few! You can open it easily with the thumb stud, but if you catch the Axis lock with thumb and forefinger and hold it back and give the knife blade a flip, it's out easily and right now! With a bit of practice, you can release the lock as the blade moves into locking position. You can close the knife the same way in reverse. I have the large one and the smaller copy. The big one has a serious blade that ought to handle about anything you'd want to be close enough too to use it on.

Gonna hafta look into my new State's knife laws! Maybe some will chime in an enlighten us all about what Texas will allow!

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So long ... Ken