I used to own the creative zen vision (m) and always used the soft rubber covers which protect the screen with a plastic window. They make the player look fairly naff but keep it free from sratches (apart from around the screen where the plastic sometimes rubbed).
This case adds very little size to the player, and keeps it looking good. I'm confident that whilst the player *might* suffer at pressure points it'll stay pretty much mark-free. In response to other reviewers: i think although the buttons are uncovered, they sit lower than the rest of the player so won't suffer too much. Also, i'd prefer the buttons got a bit scuffed than the screen. Alot of the covers on the market don't offer any screen protection.
So, in conclusion: looks good, easy to fit and offers *almost* excellent protection. Good product.