My Iliad is a year old, has been treated fairly harshly. I shove it in my bag alongside a load of other stuff. I have only recently put it in a cover. For six months it went through xray security scanning pretty much four days a week. It has been dropped a couple of times, the second time being from the seat of our four wheel drive on to gravel, landing face down on gravel ( I don't recommend testing this out tho

), this fall resulted in near damage to my heart, but none to the screen.
I consider the screen to be a petty tough device to withstand what I have inflicted.
Karen