I have carried several 1911-type pistols, most recently a ParaOrd P12.45, in Condition one. Usually in a Galco S.O.B. or a belt slide-type rig. No real problems on the draw as, like others above, I found the thumb usually "clears a path" past any potentially snag-causing covering garments.
------------------
"..but never ever Fear. Fear is for the enemy. Fear and Bullets."
10mm: It's not the size of the Dawg in the fight, it's the size of the fight in the dog!