I'd like to have a lightweight protection case for 17" MBP Unibody. I like this: http://www.radtech.us/Products/MacTruck.aspx but its too heavy (2.3kg). Maybe something like these: http://www.saunders-usa.com/rhinoskin/?sku=00790 but they don't make cases for new unibody notebooks. Any ideas where to buy something like it? I plan to wear it in backpack.