The Ableton Padded Bag is great for casual use - but it is not designed as a dedicated "work bag," as in, to comfortably haul around gear and records.
Ableton partnered with a company called Airbag Craftworks to release this bag:
http://www.ableton.com/nerdbag
It was a limited production, but they looked cool and were great for transporting gear.
The Nerdbag may no longer exist, but check out AC's other offerings if you need something sturdy for your equipment.
Otherwise, the Ableton Padded Bag is a good to have around for regular use.