I'm relatively one-sided. I can stop and unclip either side but always mount/dismount from the left (because of the drivetrain! Sure! Of course I was considering that when I learned!...not. More likely the horse thing. ) and always clip in with my left foot first. Riding in neutral I always have my right foot back because I can't seem to get my left heel down if that foot is back and it throws off my balance. Something to work on.