Has anyone tried Rhino-Shield's Spray-on Ceramic Coating? How expensive was it compared to vinyl siding? The promo site says it's "a long lasting coating that gives your home the appearance of fresh, rich paint but offers the longevity of vinyl siding products." http://www.rhinoshield.net/ I'm all set to get vinyl but would rather have something else if it were affordable and didn't need constant repainting. My preference would be cedar shakes or fiber cement, but that ain't gonna happen!