Speaking as a Texan, there are only two signs that I pay attention to wherever I go.
One is the 30.06 sign, a specifically legal sign that WILL result in the prosecution of a CCW carrier if caught. It is very rare that I actually see one of those, and I go a lot of places.
The other sign that I find to be VERY ubiquitous is the one that states exactly as follows:
"NOTICE: The unlicensed possession of a weapon on these premises is a felony with a maximum penalty of 10 years imprisonment and a fine not to exceed $10,000." (Emphasis on the word "unlicensed").
I very rarely even see a 30.06 sign (I don't shop at liquor stores), and I most often see the "unlicensed possession" sign.
In other words, I carry my defensive weapon wherever I go.
And by the way, I went into Walmart the other day knowing the company's objection to weapons on premises, BUT, the sign I saw on the main entrance door was the "unlicensed possession" sign, not a "no weapons allowed" sign.
I carry concealed, and I conceal well, so unless I know I have to go into a Court House for some reason, I just carry, Period, and don't worry about it.
My right of self defense trumps the right of someone who doesn't want me to carry my gun in their store anyway, because their demand denies my right while my demand to carry for self defense doesn't affect them one little bit as long as my weapon stays holstered... which it most certainly will unless I am called to defend myself or someone else in imminent danger. In that case, the only thing I want to hear from that store owner is "thank you very much".
On the other hand, some store owners are just plain stupid, so if I was in a "no gun" store where the owner was being attacked, I think I might just have to "ride it out" and let things unfold just like the store owner wants it to.
Store where armed citizen saved employee during stabbing posts 'No Guns' sign