hivoltage:
I should have mentioned an alternative method of carrying IWB -- a belt clip from Clipdraw (http://www.clipdraw.com/ ). Here's a macro photo of one which I had engraved and have installed on one of my 1911s:
(http://i2.photobucket.com/albums/y30/RichardS/engravedclipdraw.jpg)
This rig is simply an adaptation of the old "Mexican Loop."