Sounds interesting.

I emailed the manufacturer and the rep told me that a product they produce called Vertistone does a really good cover job. However, it is very expensive and I'd rather be able to try a sample. But it does sound interesting, like you say. I don't think I want to spend $80 or so for a can and then find out that I'm going to mess up the job or not be able to complete it. I really don't know how much it costs, but that's what I heard about it