So I hate to beat a dead horse, and there are a lot of threads out there about the best bags for MBPs, but none of them answered exactly what I needed so unfortunately here I am creating a new post. I'm looking for a bag with a number of features: 1. Capable of storing a 17" MBP and a college textbook(s) and/or notebook(s). 2. Capable for use other than commuting (overnight clothes, day-hikes, etc). 3. If not equipped with a well-padded laptop compartment, needs to accommodate a MBP 17" InCase Sleeve (http://goincase.com/products/detail/17-neoprene-sleeve-cl57079). 4. Preferably a two-strap, traditional backpack (North Face, Mountain Hardwear, etc). Exceptions to the parameters would be some Chrome bags and other durable messengers. I'm not interested in canvas, leather, or anything that looks useless for anything other than laptop transportation. The reason I haven't found a suitable North Face is that I'm unsure of they're exact internal dimensions. I made a 17x12 frame out of wood and took it to an outdoors shop and the frame didn't fit in a Mountain Hardwear Enterprise, rumored to be their largest bag. So, who has found an traditional backpack for the MBP 17"? Or, perhaps the more accurate question, what did you get as an alternative when you realized the impossibility of finding a traditional two-strap for the 17"?