Two 3.6-mile city rides.
Interestingly, and impossibly, I broke the cleat on my left shoe sometime between clipping in as I left work and attempting to unclip when I got home. Eventually I unlaced the shoe and removed myself from the bike that way. Vice grips and a crowbar loosed the shoe from the clip. With only one screw holding the cleat in place instead of two, I could twist the shoe in any dimension without levering the cleat off the pedal.
I suppose I usually unclip the right foot to lean away from the street. I could have found out in a much uglier manner than comically on my front sidewalk that I was laced instead of clipped onto my bike.