Late 2008 15" MBP and 2010 13" MBP. No scratches on either, despite time at beach houses and the larger one having been relegated to the kids use (at home). But a lack of scratches is probably fate as much as anything. Years ago, with my first AL PB, I had carefully tucked some kids DVDs into the protective sleeve next to the PB. At a beach house, the kids asked to watch the movie. I told them where to retrieve them from the backpack on top of the bed. About 10 minutes later -- ka-thunk. Gravity prevailed. My daughter had not re-fastened the strap at the top of the laptop compartment, and the PB slipped down and off the bed, and onto the hardwood floor. No dents or scratches, but the latch broke. Lesson learned: laptops, like infants, are best kept on the floor (unless safely tucked in for the night).