Thanks for keeping this thread open. I will want the theme switcher too, when released. And a single column expandable theme (my style preference; like WP-touch plug-in for Wordpress).
Further to theme-switcher feature, please consider adding a sub domain override option (i.e if getenv( "HTTP_REFERER" ) or whatever contains a "mobile" sub-domain like mobile.newswest.org then override the getRaw('HTTP_USER_AGENT') lookup).
BTW: Another feature seen in a couple of Wordpress mobile plugins is an option to provide a link or button the user selects to enable / disable the mobile theme switcher (e.g. a cookie based toggle button ).