Other Bags to Check Out:
The Day Tote from Qwstion is a remarkably designed bag that's surprisingly awesome to use.
The Locker Pack from Ryu is an insanely innovative bag for daily carry.
The Setout Laptop Backpack from Tortuga is an excellent bag for minimal travel AND daily carry.
A perfectly sized bag for tight daily carry packed up in a very modern, functional package.
The Aer Duffel Pack is not the tool for every job, but for particular uses it just might be perfect for you.