Does anyone have any experience using screen paint as shown here:

http://www.projectorpoint.co.uk/projector-screens/projector-screen-paint.html

My current screen is a wall painted with bog standard mat white paint, and it seems to do a very nice job with my LCD projector. I wonder if this is really worth the £149, or just marketing hype, esepcially as I wouldn't need half the kit (it includes magnetic borders but I already have a very nice rasied wooden masking frame covered with acoustically transparent material hiding the speakers within the border.

Its the "contrast and brightness booster" paint that interests (and intrigues) me.