I have done my best to determine what the picture will look like when the locations are reversed & I can see a difference. Draper actually says, "Glass Beaded is
Brighter on-axis viewing than matt white, excellent color rendition, with slight loss of clarity. The projected image is significantly brighter than matt white, but only within a 90Â° viewing cone. Therefore, glass beaded surfaces do not perform well with ceiling mounted projectors." That bit about "slight loss of clarity" bugs me too. It is possible that I am being unreasonably picky, but I know from experience with my audio system that compromizing has a cumulative negative effect. It's all in the details! So I'm gonna sweat the small stuff.