i think what the OP post was asking about removing the headset in the idea of taking off a threaded fork, but even at that with a bag that will carry a bike you should be able to carry the wrenches for the headset along with it. i wouldnt think it would be any more trouble than a threadless sans having a few more tools to carry.

*edit*
damn, i dont know where my mind went but i remember that being talked about somewhere but it definitely wasnt the op. well whatever.