On comparing the Surface Touch Cover to an iPad Smart Cover: "The big difference lies in the pressure-sensitive film keyboard on the inside of the Touch Cover. It will make you forget that clunky keyboard on the Atari 400 ever happened."
http://www.pcmag.com/article2/0,2817,2411249,00.asp
http://www.pcmag.com/article2/0,2817,2411249,00.asp