Good point. I'm worried about all the little edges, etc. that could get bent or broken in a side impact. I once had my old Macbook Air in a neoprene case, locked into a soft-sided luggage that I left with a hotel concierge while I was away for the day. After I retrieved it and went to my next hotel, I found the corner of the MBAir bent. It's pretty tough aluminum, it was only being by one or two people in an environment nowhere close to being as abusive as airport handlers, and yet it still came out banged up!

I did find this online, but it's virtually the same reported weight as the B&W case. Tough, but cutting it really close...

http://www.phillycase.com/products/s...se-no-foam-418