Hi Pete,
CBP launched SimpleMat last Winter, if I recall correctly, and it's intended SOLELY for the DIY/Home Despot market. I was shipped a case of the stuff prior to the launch to test drive and it's still sitting in my garage. I honestly couldn't come up with any legitimate use for it.
I know of one person who used it to mount tiles to the outside of a metal range hood, with really good results. Otherwise, your wall has to be ABSOLUTELY flat and your tiles have to be ABSOLUTELY flat for a reasonable finished product. As there is no compressible bed or mortar, there is no compensation for irregular planes.
You pay the shipping and I'll give you the case in my garage.
Shaughnn