I'm a bit more "horizontally challenged" than you are and consequently have more waistline to play with, but like you, I am left handed, and I do carry a 1911. It seems to my like you could eliminate the problem simply by rotating your holster about five minutes toward your posterior. Instead of carrying at 9:10, try pushing it back to about 8:55. Then that tab will be parallel to your side, instead of sticking out forward.
My regular IWB holster now is an
MTAC, and I carry both a 3" Kimber and a 5" Springfield with it, and quite comfortably for all day wear. My complaint about belt loop type holsters like yours (I have three - a Galco Summer Comfort, a Galco Royal Guard, and a D.M. Bullard IWB) is that they are not anywhere near as stable as the MTAC. They are likely to shift draw angle of the gun forward or backward, as well as shifting the entire holster forward or backward. The MTAC stays where I put it, all day long, without shifting anything at all. Also, it spreads the weight of the gun out over a larger area of your belt,
and it spreads out the amount that the holster body presses into your hip and side. Plus it's tuckable if you need it to be.
Hope that helps.
PS: Comp-Tac's turnaround on the MTAC holster is usually not more than about a week, and their customer service is the best I've ever seen.
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