I have never unclipped both feet whiile the bike was actually moving (i.e.. braking to a stop.) How would that even work? At a light or whatever I unclip only my right foot and lean slightly that direction. Either foot would work I'm sure. I like the right foot because I'm right-handed/footed, so I have an easier time manipulating the pedal to get clipped in when I'm pushing off with my left foot.