Ever since I started OC'ing, I've started looking on doors of businesses for a "firearms prohibited" sign. I can't recall of any in Greenville with such a sign. I also started to take notice at every restaurant I went in for alcohol. It's surprising that almost all restaurants serve alcohol, except for fast food places.
Sidenote: I went to Toyota of Greenville today to get some touchup paint for my car. They had a sign on the door that said "Firearms prohibited". I thought state law required the sign with the pistol with the red circle/slash over it? Dreamer, you probably know the answer to this one. If I am correct, can a CHP holder disregard such a sign if it isn't up to code?
No it doesn't have to be the common sign you are used to seeing. They can have it written in Crayon on a paper plate if they choose to and it still is legal for notification at their business.
Establishments are under no obligation to post using any sort of "approved" signage and a CHP holder (or OC'er for that matter) can technically be charged with trespassing if they disregard any posting a business has used.
One of my doctor's offices that I go to has a "different" sign hanging on his door that states "Absolutely no firearms allowed inside or on premises". This is sufficient to express his intentions legally.