TexasCHLforum.com

I've never seen any indication that it's an insurance company requirement.
It does seem to make sense, unfortunately.. Speaking with LEOs and just reading media incidents, there seems to be a number of "accidents" at gun shows.

Governmental buildings are governmental buildings - they shouldn't be posted 30.06. Especially when most city attorneys can read and understand the law. People leasing the building can ask for voluntary compliance or ask those to leave who choose not to comply.

Looks like good news. It's a bit interesting that there is any controversy over legislation that enables enforcement of existing laws on the books.
Certainly this will solve the city-owned property 30.06 issue...