This must be used when a LEO is looking for a reason to charge someone. Otherwise nearly everyone in attendance at a gun show could be charged with this once they hit the parking lot... or every person that drives around in the country with a rifle/shotgun hanging in the window of their truck. Even a hunter walking to/from their stand that might be visible from a road... someone driving down the road might be an anti and is scared at the sight of a gun.Some LEO said that carrying on ones own property could still be violation if it frightened the public, and could still get you on public display of firearm...that if it is visible from street, it is still public.
Not saying it isn't possible, but that LEO's interpretation seems to be pretty loose. I would think that in order for that charge to hold up in court, they would have to prove some kind of intent (brandishing, etc.). After all we are in Texas, surely the mere sight of a gun (non-threatening) would not be enough to get prosecuted, much less convicted.