Keep them away from Crazy Uncle. I am not familiar with case law, but a quick glance at the Texas Statutes shows that nothing can prevent a person, even a mentally deficient or incapacitated person, from asserting their ownership interest in their guns and taking possession. Crazy huh?
So hiding them and keeping them away is the best option.
Oh and I also saw this gem, HB 284:
Law-abiding adults now enjoy the right to treat their motorhomes and travel trailers as their homes with respect to keeping and bearing handguns, knives and clubs. No CHL is required. This is an excellent idea for other states to pursue in the coming session: it advances the civil-right to arms; recognizes the individual right to keep and bear arms; acknowledges self defense; resolves a dangerous risk to the people, families and their children; it's fair; and most important, it is a reasonable common-sense law, an issue the news media always seems concerned about.
Effected vehicles are treated as your "premises" whether used on a temporary or permanent basis, and includes RVs, and towed vehicles such as a travel trailer, camping trailer, truck camper, motor home, and horse trailer with living quarters.
So you can live in a HORSE TRAILER in Texas and have a right to bear arms, just as in your own attached-to-the-earth home.