I have the 1.5" (or is it 1.75"), 5-stitch and like it so much that I wear it as my "normal" daily wear belt. Then, when I have occasion to use my IWB setup, its already there and of course works excellent for that too!
I also have the wider CSM model. Don't remember if its 1.75" or 2.00" in width. Its VERY stiff - and works great awesome.