IWB for any time I'm in public. OWB for around the house or while fishing.
Short of wearing spandex pants and a form fitting Under Armor compression shirt, almost every person walking around is self absorbed and ignorant of their surroundings. Someone who carries will spot you almost without fail, but since they are carrying as well, they don't care. They will pick up on your dress, the occasional line in the clothing, the way you carry yourself, and little things we all do that since we do them, we recognize.
I've really had an education over the years as to how oblivious people are these days. All to our advantage.