Re: CCW/IWB/SOB for my 1911?
Small of Back for a full size 1911?
IMO you will not be happy with this set-up, Commander, chopped, yes. A full size simply will not work for concealment as it will "block print" your whole backside. Others have already mentioned much better solutions for full size. I've used SOB comfortably for more than 20 years with a full house chop.
Veer is correct about the major concern with SOB, been hearing that for decades now. I'm sure it is true, but have never heard of a single incident where it has come into play.
Double action Stan W. .45, circa early 80s. Double action .45s were unheard of back then and required some 10+ hours of serious rework. Pull the trigger on these and a forward hammer goes back!
Holster is first gen Galco with adjustable drag (important for a friction fit, no snap rig.)
Sitting in a car? Your SOB is just about useless. Switch it out to a simple speed cross draw. Bianchi 111, again decades of good use.
Two nice old school, properly made (wet fit) holsters. You wont be disappoint with either.