Open Carry is not lawful (except under specific circumstances, such as to/from hunting or on your own property).
There are bills in the works in the Texas Legislature to remedy that absurdity -- IOW, to allow open carry in public.
Out here in the boonies, I carry openly -- with a couple of "snake" (shot) loads "up top". In urban environments, I consider concealment to be both tactically and socially superior. But I hate having to be paranoid about preserving concealment just because of a stupid law!