I am selling my very gently used ID (Black/Steel/Cayenne) with Q-AM Shoulder Strap on ebay:
TOM Bihn ID Laptop Messenger BAG With Q AM Shoulder Strap Excellent Condition | eBay
It served me well, but my new job requires something more professional. I am selling it to buy a Zephyr!
(PS. I am also interested in potential trades - any Zephyr owners out there looking for an ID?)