I have been occasionally traveling for 2 years with my macbook in a fur lined Incase bag and it is well protected. I just bought a 12" Powerbook to travel with because it is smaller and hopefully more durable. My question is; Can I carry the Powerbook in a cheap, nylon-lined backpack (padded and made for a notebook) without scratching the case / top? I am sure it would scratch the Macbook but I have no experience with an aluminum notebook. Any help would be appreciated.