Dave,
On the one hand, it would be ideal to never have to carry your gun in a different position. On the other hand, when you're wearing a tactical holster, it is almost always a back up gun. If my M-4 goes down, several other teammates will more than likely be putting rounds on my threat before I can transition to the pistol. Though I got away from "drop" holsters a long time ago, I used to carry concealed in a similar location to minimize issues. I now conceal AIWB whenever I'm in soft clothes, and wear a tac rig when kitted up. I haven't found the different location to be an issue, but if I screw up my tac rig, I am unlikely to shoot myself. Most of my practice involves the AIWB, so I feel that the reholstering threat is minimized there. Of course, I also use the "hard break", and my pistol has a wonderful thumb safety on it, in addition to being hammer fired:-)
Is that clear? Too much typing for me...:-)
Give me a call when you get a chance.