I had one once years ago and it was comfortable. Sadly, it was so long ago that I don't remember who made it. The holster was nylon and easy to draw from. I only had to pay about $20 for it new (this was back in the mid 80's). I'd like to find another like it. Granted, you do need a jacket if you want to carry your 1911 concealed with a shoulder holster. A nice thing about the 1911 for drawing from a shoulder holster is that you can leave the hammer down until it is drawn then cock back the hammer to fire. Your thumb and your mind are then the safety and that is true of almost any revolver also.
Personally, I find it difficult and uncomfortable to draw from my strong side with a concealed holster. I find it far more comfortable and faster to cross draw. But that's just me and it has to do with the bending and angle of getting my arm to draw from my strong side unless I have a holster lower than my belt which can certainly then not be concealed. A pocket automatic in my strong side front pocket isn't a problem.
Not going to get a 1911 in the front pocket of my jeans though