The Go packable backpack from Aer definitely provides more than most packable backpacks.
Other Bags to Check Out:
The Tech Sling from Aer boasts a solid amount of organization and space for loose gear. Features a space for a 13" laptop.
The Bravo 18 from Remote Equipment is a simple 18L bag featuring minimalist philosophies and strong design chops.
The Split Shift from YNOT is a very stylish backpack/tote combo for those of us who carry minimally on the regular.
The Wilderness Rucksack from Tanner Goods is a gorgeous, artisan, hand-shucked heirloom bag that your grandpa would be proud of (whichever one of your grandpas was more badass).
An extremely solid, minimal daily carry with enough tactical connections for you to customize however you want.