You can't carry a gun into a liquor store, fyi, at least not in my state. If the establishment generates more than half of it's income from the sale of malt beverages or liquor, by law it is automatically a gun-free zone (exceptions exist). This is my favorite anti-gun law because I can still go into Safeway or Family Thrift's liquor department and buy alcohol while armed, but if I go next door to the actual liquor store, which is the same size as SW's or FT's liquor department, I would be committing a crime. Same part of town, same time of day, same person, same weapon, same CCW permit, same bottle of liquor...one door leads to responsible drinking, the other door leads to 1-10 years in jail.
But yes I understand the point you're making and I think it has merit.
For me, carrying open simply creates to much social tension, because people either panic at the very sight of a pistol, or they're infatuated and always want to ask why I think I need to carry a gun. Either way it makes life harder.
A gun on the hip should be as normal as a cell phone or molti-tool on the belt.