As an alternative, look at one of the under garment shirts that are out there that have built in under arm holsters that you would wear like a t-shirt.
Personally, I've never really cared for them. However, a good friend of mine absolutely swore by them. He'd wear his up around his chest with the gun positioned under his left arm in a shoulder holster type position. Cover that with a shirt for a Superman carry.
He was a big barrel chested guy and you'd never know he was carrying unless he told you.
BTW: his EDC was a 6" Model 29.![]()