I think the risk of running across a total nuter is just too high, plus I am sure it would irritate a lot of people (as the previous posts have stated). Just unclip one foot and get your foot back in when you get going. I personally use SPD pedals and usually have no problems getting my dominate foot back in the clip in under a second. If you are using SPD you might want to reduce the clip tension a little, it will allow too get in and out of them more easily. Sorry for saying that if you already knew it.