I love my speedplay light action's. yes the cleat is fairly large, yes they are akward to walk in and click on the ground when you walk. BUT they are made for cycling! %97 of the time they are on your feet you'll be on a bike! fortunately these exist for the other %3 at the coffee shop. actually I stick them in my jersey pocket just in case I have a long walk home.
http://www.nashbar.com/bikes/Product...2_199518_-1___