[de Buillion]

"Yes, that's right, you *can* legally walk down a Texas city street with a slung rifle that is loaded,"

Is the rifle/shotgun required to be slung?

[Centurion2000]

"Yes, that's right, you *can* legally walk down a Texas city street with a slung rifle that is loaded,"

Is the rifle/shotgun required to be slung?

Nope, Texas has no longarm legal restictions on open carry whatsoever excepting certain functional locations (schools, courts) and the actions of private property owners.

In practice however, walking around downtown with rifles will get you closely watched by the cops.