I noticed this in an article about the Texas Open Carry Bill

  "We just take the word 'concealed' out in every section," he said.  "Also what we are doing is adding a sign that business people can put up, if they are comfortable with concealed carry, but are a little uncomfortable with open carry."

 According to one of the open carry websites. 

Can I open carry on private property?
Yes, provided the property does not display a 30.07 sign. The 30.07 sign will ban open carry, while the 30.06 sign will still apply to concealed carry. A business wanting to completely ban firearms is required to post both. However, if the owner requests removal of the weapon or asks you to leave the property, please respect his or her wishes. Failure to do so could result in the charge of Criminal Trespass and unlawful carry.

So, my next question is, which businesses in Glen Rose and Granbury display these signs, most particularly restaurants? Going to call around over the next week and compile a list.