It rolled out great. I really like how Glidden rolls out and hate Behr despite them being the same company...actually, Behr rolls out smooth as well, but can't cover for beans :-)
As for Glidden Gripper being a good solution for a white screen, I'd say only if you have a relatively flat surface. I noticed that it showed a *lot* more imperfections than the flat gray I have on it now. If you've ever seen horsehair plaster, you'd know it's a lot less smooth than sheetrock. The bumps were visible w/ Gripper, but are not w/ the flat paint, so my conclusion is that you should stay away from satin/gloss paints for projector walls that are not smooth.
As for color rendition, it showed too much red (lips were overly red, faces were overly red) but it may be because it amplified everything. I had to turn the default color saturation down by -10 on my AX100. In contrast, the flat gray needed no adjustments after I reset it to factory settings.
So the short answer is yes if you need white, but if your projector has enough output, a gray screen truly is better.