I must admit I do worry a bit about you clipping out both feet.........Then once you have worked it out, practice unclipping the foot you push off the ground with, and develop a little routine around it that you can commit to muscle memory. Say... gently apply the brakes to slow down, unclip the foot (while it's at the top of the pedal stroke) hang that foot down, little bit more brake, lean the bike (and you) a little that way and put the foot down, lift the other foot to top of pedal stroke (because then you are unlikely to lean that way and fall over standing there, and also you are ready to go again).
I just think that the more things you can have attached keeping you and the bike stable while you do this, the better off you will be.
