I'm in my third day of wear and I've found that, indeed, off setting the thing such that the grip of the gun is under the zipper adds comfort. You could carry a longer gun that way, would just hang down the leg a little further in one of the bigger models, but the thickness of the gun and grip would be the problem. Don't know if even a 1911 would work real good, but don't know until I were to try it. So far, it's a breeze with the SP101. I don't think a 3" would be any worse than the 2.3", either.