I just bought a new 13" aluminum MacBook and I'm in the process of finding the right case/bag combo. My question is does the aluminum scratch easily on these? Right now I am carrying it in my Swiss backpack but the inside is not cloth. Its not really abrasive but its not like cotton either. I plan to get a new bag for it anyways but wanted something over the shoulder style with a cloth/suede interior. Something with a little style and not too geeky. Is anyone going with a combo incase sleeve/bag or is there a bag out there like I'm looking for?