In general terms, people in Texas can carry weapons where weapons are not prohibited. In other types of locations, the owner of the property or the person who controls the property can decide whether to allow weapons. Some companies may think that customers will be afraid of open transportation, but they don't mind having licensed concealed carriers on their property. If the company wants to prohibit both open and concealed transport, the company must display both signs.
So, if you see this sign in a restaurant and you have a concealed weapon license, don't worry, you're good to go. Section 46.02 of the Texas Penal Code requires that a gun be carried in a holster, but does not provide a definition of the word holster. This defense is not available if the property placed prominent signs with specific notices regarding the firearms ban. The literal interpretation suggests that after constitutional carrying becomes law in September, an unlicensed gun carrier would not commit a crime if he entered a business by properly displaying signs.
Individuals who are currently prohibited from possessing firearms under state and federal laws will not gain the right to possess or carry a firearm under this legislation. This section clarifies that even if a person has a concealed weapon license, they are still not allowed to open carry-on baggage on a property with a 30.07 sign. A person without a license has the right to ignore 30,06 and 30,07 signs UNLESS the sign has additional language, such as a 30.07 sign that says OPEN CARRY FORBIDDEN, then it also prohibits carrying without a license but apparently not wearing concealed without a license, but a 30.06 or 30.07 sign that also says NO FIREARMS and maybe even NO GUNS would now completely ban the transport of firearms, even long guns and perhaps even knives as well if a prosecutor wants to be adventurous. Now, I haven't yet seen a business with a 30.06 sign and no 30.07 sign next to it, but under the law, 30.06 signs DO NOT prohibit openly carrying firearms.
My interpretation is that both signs must be displayed correctly to legally prohibit both forms of transport. Texas law generally states that it is a defense to prosecution under these location restriction laws that a person carries a handgun in a restricted premises or property, but has immediately left the premises or property after personally receiving notice that carrying a firearm. I don't know how the Texas courts have interpreted a 30.06 violation, but 30.06 addresses have only been hidden and 30.07 addresses have only been opened. The signs are mutually exclusive and a 30.06 does NOT prohibit you from opening carrying a gun itself.