It is probably like the Bullseye in Cumming... keep your gat in the holster and there won't be any problems. The signs are more directed at the stupid people that come in with a pistol in hand that has a closed slide and a magazine inserted.
I'm pretty sure they have a sign, but I have seen a customer open carrying there (holstered). Not absolutely sure, but I think it was loaded. The action (1911) was definitely not back.