I always open carry when out and about. Mostly I get no reaction from folks and they don't even seem to notice or if they do, just have no issues with it. It is legal here in Alabama and has been I guess all of my life. I remember doing it back in the '60s in down town Anniston.
A few years ago I was in Lowe's open carrying. I was going down the big main aisle the cash registers are on heading back to where the tools and such are. A black man was coming my way from that direction.
He saw the gun, stepped to his left, leaned way over for a better look them immediately took a different aisle at a 90 degree angle to me and moved quickly away. Never did figure that one out.
Another time in Winn Dixie I had a guy walk up and ask me if I was a security guard. I told him nope, just a legally armed American citizen exercising my right to carry. He kinda shrugged and walked away.
Most folks who acknowledge it ask me what I'm carrying and often strike up a conversation about guns.
Had a black woman one time in Wal-Mart who saw it and came up and walked along right beside me saying out loud, that she was staying with me cuz that way she knew she'd be safe. I reckon so, but admit it was almost as strange a behavior as the black guy in Lowe's tho clearly she had no problem with seeing a white guy armed. I got the impression maybe that black guy did.