My MacBook Pro arrives tomorrow and my good old trusty Logitech laptop mouse is on its last leg. I really like the look and functionality of the wireless Mighty Mouse, but I'm wondering how well it's going to work on different surfaces, mainly a couch cushion. 80% of the time I am using my laptop I'm in the living room on this gigantic couch-like chair. My Logitech mouse has no problem because it's designed with separate buttons, but I'm concerned about how the Mighty Mouse will do on a less than solid surface since you have to press down the whole top of the mouse body to activate a click, as opposed to a traditional mouse design where you can just press down on the front or separate buttons. Anyone have experience using their wireless Mighty Mouse on a couch, bed, chair type situation? Thanks!