I purchased this bag for work as I need to be hands free and I didn't want to overload my pockets. I absolutely love it!! The external pockets are great for my iPhone 4S, keys, paper/pens. The construction is well made.
If I use it for around town, I can carry my Kindle 6" Paperwhite (with a slim case)with still room to spare for the above items!
The only suggestion for improvement is to seal off the front zipper compartment to the back outside compartment (like you do with the Urban Bag...which I also have and LOVE!!) otherwise your items shift back and forth and perhaps maybe an inside pocket w/ a zipper?
Great Job, Manhattan Portage...I am a Timbuk2 girl but feel you're the East Coast Cousin that I am happy to know :)