I've read some previous posts about the iSkin from a couple months ago and thought I would revisit the idea. Looking for a nice keyboard cover that doesn't affect typing. I had one for my Dell and I would have to press the keys harder in order to get the key pressed. Is that the case with an iSkin? Also, how does the cover stay on the laptop? Again, the Dell one had glue on the outer edges which didn't allow you to take on and off. Also, is it necessary to get wrist pad covers? I don't wear watches so I don't fear scratches, but does that area really wear down fast??