No, no damage here either. However, the display still gets a little dirty, even when the cover is closed. Damage may occur if something gets on the keyboard and causes friction when the cover is closed.
Salve Musugru
Yes, the iPad holds very well in the cover. For example, when it's lying on the table and you're writing on it, nothing slips - neither with the keyboard on the back nor simply opened up. How exactly Apple has implemented the magnetic technology - I don't know... but watch out if you have it on a magnetic surface. Suddenly you only have the iPad in your hands and the cover is hanging on the frame. Nevertheless, from my point of view it's a great product - much better than the gawky Logitech version...
Cheerio