Like other, I don't think a break away bike is best. I was looking into the Ritchey outback break away to use as a vacation/long business trip option. From what I coud see, it s not much different than rebuilding a bike and require some room.
You need to lay out the frame, put it together (not difficult), add the wheels (not difficult) , adjust the handlebar (not difficult but annoying), set the seatpost, reattach the cable (forget hydraulic) and adjust the gear shifting and brake. Nothing difficult and totally doable in an hotel room or air B&B etc. but, it will take at least 20 min and then clean up. Having to do that on a commute, no thank you. on a commute, I would accept to fit the front wheel on a "normal" bike and that s it, not a partial rebuild.
As I said these bike are great option for vacations as you can fit the lot in a std suitcase and use it at destinations but that's it.