I have tried several and the only IWB holster I have found that was comfortable to me was the Milt Sparks VMII. Believe me, I didn't want to do the long waiting game so I tried several other brands with no luck and once I got the VMII I was sold. Now I have them in all 3 sizes for my 1911's.
How hard is it to holster / unholster your gun from these holsters? All the leather holsters that I have dealt with I never cared for since the gun was so tight fitting in the holster I end up giving my self a wedgie trying to double hand yank the gun out of the holster.
Sticky Holster.......They're on line.
If you're like me you'll say, no way will that thing work, but work it does.
It does it's job very well and just as advertised.