Perhaps it's because I'm skinny, but with car keys, phone (no longer a problem ;-/), wallet and train ticket I find an N810 too uncomfortable to have in a trouser pocket for any length of time. Don't forget, Rover is 18mm thick: that's about half a centimetre more than an N810. With the smaller width & height it's going to properly look like a brick (as my colleagues' N95s and Sony Ericsson X1 do).