I do. One of my two gunshops has a sign that says "No Loaded Firearms Please." Out of respect to them, when I walk in I inform that that I am CCWing and ask them what to do since I don't want to leave the gun in the car. They usually just either tell me to keep CCWing and thank me for informing them (rather than try to get away with it), or they ask me to unload while in the store, and then reload on the way out. So I'll end up carrying, but an empty gun.