One of my favorite bang-around backpacks is the Photo Hatchback 16L AW. It holds my camera gear in a removable protective case, looks stylish, and is very comfortable. Another reason why I love this bag is that it will protect both of my iPads: the iPad 3 (full size) and iPad mini.
The front padded sleeve has a thin divider panel inside. I place my full size iPad in the sleeve behind the panel, and the mini in front of the panel. I can get to either device quickly, yet they are stowed securely and not banging against one another.
Just another reason why the Photo Hatchback is a great everyday backpack for all of my gear.
Derrick Story is the Photography Evangelist for Lowepro.