I see people open carrying both pistols and rifles on a regular basis and not once have I ever felt the slightest fear they would go postal.
One of our regular morning coffee group open carries. We have sheriff’s deputies and city police who drink coffee with us. No one has ever said a word to the open carrier.
Actually “in today’s times” I feel comfortable with him being there, in case some nut came in and tried to shoot up the place. Not that any of us old farts are worth killing.