I have a DeSantis Insider that fits all full size 1911's. It is a simple leather IWB with a wide steel belt clip. It is a vertical rake, like most holsters that are "not much more than a leather pouch" and does wrap all the way up to the rear of the slide to form a sweat shield. It slips in and out of your waistband very easy, so it is nice for times when you want to remove/replace a holster.
After using it two or three times I started CCing a smaller gun in a more structured holster, so I wouldn't mind passing it along. It is 99.9% new, but I'd give you a good deal on it. I think I even have the original bag, if I'm not mistaken. If you're interested PM me and I'll snap & send a couple photos your way.
Here is the DeSantis listing, though the 1911 version is somewhat different from the compact Glock model pictured: