When I'm not carrying my M27 in a service holster on a belt, I'm almost always carrying my 1911 in a shoulder rig. I like wearing suits and jackets whenever I can so I can manage most of the time, if I'm working I'll just throw a large button work shirt over a t-shirt and let the overhang take care of it. I live in rural nowhere where guns are everywhere, so the risk of printing isn't as serious as some places, nobody is going to go nuts or bananas and call the police in total fear, so my concern with keeping things as undedectable as possible might not be as serious as yours.