I recently gave this a lot of thought as I decided to start commuting with my Dahon MU SL. Settled on locking skewers + Kryptonite Evolution Mini for quick day time locking and the Kryptonite Fahgettaboudit for long term or overnight stuff. My original plan was to use the Fahgettaboudit all the time but that lock is a heavy monster to lug around. The only thing i do not feel comfortable with with this setup is the seat post...i really wish the end was flared like the Bromptons.