I had a "Jackass Leather Goods" shoulder holster for mine. It carried the pistol butt forward off draw, and two magazines on the other side. When I was a a police man on duty, I often had that under my jacket. The holster is very well made, form fitted to the weapon, and I never worried about it the way it was carried.
This was the exact holster. But when I purchased it thirty some years ago.. it was a little cheaper then it is now. It was very comfortable and held to your pants belt with a simple belt keeper. But I am sure a pancake holster under a long tail shirt would work just fine for what you want. Look at Duluth Trading Company..
http://www.duluthtrading.com/ They sell some excellent quality clothing and their shirts can be purchased with extra long tails and bulky which help hide concealled weapons better.
How does that hog leg shoot?
"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, a total wreck with a big smile on your face."