I use one of Gunslinger's 2 gun bellybands. Unfortunatly for us all Gunslinger passed away earlier this year. He was a great guy.
He was a distributor, the manufacturer of the bellyband is a company called Be Secure. I have no idea how to contact them.
I always carry my 1911 on my strong side. I don't usually carry a spare gun on the off side, but I have done it a few times. I may get a very small gun to carry in that pocket as a 24/7 backup gun to my 1911.
When my company made a new No-Weapons at work policy, (you get fired, even if you have a CCW) I carried 3 guns for a while. Just out of spite. One on each hip in my bellyband, second belly band around my torso. Heck, one of the guns was a 6' bbl. model 1917.