Ninerfan, thanks, the Gelaskin is not difficult to install at all. Like all other 3M adhesive material you can take it off easily to readjust.
Compared to the Gelaskin for iPad, the corners are a bit tricky this time. You see the really thin strip on the top left hand corner next to the on/off switch and the bottom left hand corner near the speaker? They are quite hard to align to the right place. I would recommend to align all the openings on the top first (on/off switch, centre recorder,headphone jack and camera) slowly moving on to aligning the orientation lock/vol up and down and then move on to the bottom speaker, and then the rest of the back.
To make sure the thin strips of plastics to adhere to the back you need to press and hold for maybe a minute or so. Other than that it's easy It took me no more than 9-11 min.
I didn't bother to install the front cos I love the white bezel.
Hope this helps