As a concept its great :)

I have tested this on a few sites/devices and in general i think it is a very good concept – looks great, touchscreen enabled & big plus points that we can easily log out on mobile devices!

My only reservations is that custom plugins/themes display their settings in a fixed width (non fluid) – which in effect makes the mobile view fairly redundant, although this may have to be addressed by the theme/plugin makers if this plugin was to become an official reality.

Keep up the good work – definitely heading in the right direction!