Shoulder holsters seem to be the way to go for larger gentlemen. There are myriad good desgns out there running a huge spectrum in the $ range. The problem is having to wear a buttoned-up covering garment or something heavier, like a sport (read suit) jacket. I was impressed by the reasonable price of Galco's X-Project system. It gives you some additional options for wearing the gun on your belt or on a shoulder-strap system where the webbing is hidden under a regular shirt and the holster mounts outside the shirt. A fascinating design, in my opinion.
Look, Ma -no webbing!
Here's the underpinnings...
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