The Go packable backpack from Aer definitely provides more than most packable backpacks.
Other Bags to Check Out:
Qwstion is a product design studio in Zurich Switzerland who makes very stylish bags for the "hipper" areas of town without sacrificing functionality.
The Day Tote from Qwstion is a remarkably designed bag that's surprisingly awesome to use.
The Bataan is a simple 3L fanny pack that comes in vibrant colors chosen by the person who sews your bag together. Simple, functional, made with high quality remnant materials.
Ok, these bags from Nomatic are chock full of pockets. There are 2 different bags: the Travel Pack expands up to about 30L, perfect for short trips and minimal travel. The Backpack is 20-24L daily carry. Both are very sleek and, like I said, so many pocketzzz!
The Pro Executive Backpack from Waterfield Designs is an exceedingly great bag for any of you business-y type people out there. Whoooo doggie.