Beware the Fobus Roto-holster. That was my first holster and it was a mistake, the tension screw decided to let go, my holster roto'd when it wasn't supposed to and I ended up drop testing my Para P16 on the floor of the mall. There are many great holster makers out there.
I prefer the Askins style OWB holsters with belt slots or a snap removable OWB from UBG or similar.
The 1911 family of pistols is VERY easy to carry IWB due to it's thin profile. I don't think I've met a guy yet that has had issues, especailly with a compact version.
For IWB I prefer leather with offset "pull the dot" snap attachment points like those of the Milt Sparks Versa Max II, HBE COM III, UBG Canute, Desibens IWB #2, and assorted models from FIST.
Here's a list of my top holster makers, they offer something for everyone.