We had a thread on this once...

I clip out with my right foot first, and due to scar tissue from ankle surgery back in '93, it is more comfortable for me to turn my heel inward to clip out with that foot. Also I clip out when my foot is at 12:00, not at 6:00.

I think I turn my left heel outward when I unclip that foot, and it's down at 6:00. But honestly I'm not sure! I stopped paying attention a while ago.