I won't patron anywhere that has that sign posted honestly. although sometimes I don't always have that choice
I agree, I will go elsewhere if I can but in this case since the owner also feels it is his duty to insult me for my choice, I will go elsewhere period.
He apparently doesn't realize that there is a rule in the retail industry "1 disgruntled customer creates 10". That is a good way to lose a lot of business from people who aren't even carrying concealed but are sympathetic to the cause.