This plugin looks awesome.
I haven't tried it yet, 'cause someone mentioned it breaks part of Ai1EC event calendar, which I use on a bunch of sites. But, if that gets ironed out, I'd probably LOVE this plugin.
That said, this plugin could be even awesome-ER if it threw in the kitchen sink with two additional options (I didn't see them listed in the features / screenshots / FAQ, so assume they don't yet exist).
1) Ability to "collapse" / "toggle" / "minimize" the Admin Bar menu down to a tab (and, of course, to be able to maximize it again). Some folks don't like the admin bar (generally) as it gets in the way of seeing, well, whatever it happens to be positioned over, like the top 28px of the screen, etc. I don't care too much, but it would occasionally be nice to see the entire screen, including what's hidden under the bar. Would be nice if you could also move the "tab" from left to right and vice versa or top of the screen to bottom of the screen and vice versa.
2) Ability to move the Admin Bar to the bottom of the screen (would require menus "popping up" rather than dropping down, and the minimized tab pointing up from the bottom of the screen rather than down from the top). If the bar is minimized and the tab is "moved" up or down, the bar should obviously follow and also move top/bottom. If that makes sense.
I was kind of thinking the "tab" or toggle might have two tiny "arrow-shaped" links that would serve the "move tab/menu" function. Like:
[-] > [---------- Admin Bar, on top, toggle left ----------]
[---------- Admin Bar, on top, toggle right ----------]<[-]
[---------- Admin Bar, on top, toggle right -----------] \/
[+] > (collapsed, no menu bar, just the toggle, on bottom)
As I'm thinking about it, the tab could be a [+] / [-] toggle on the menu itself to use less screen real estate, and the arrows could maybe be "on hover" fly-outs, so they're not always displayed? Just when you hover over and want to do something. So, you could A) Click the [-] to minimize the menu to just a [+] sign in the corner, or B) hover over [+] and get the fly-out arrows, then either click < or > to move left/right, or click v or ^ to move the toggle / menu down or up respectively.
I'm pretty sure that if this menu had the toggle / move menu functions in addition to exposing all the backend admin stuff, it would be pretty sweet. Maybe even something worth integrating in some form into the WP core itself. I'd certainly make the case for its utility. ^_^
Anyway, just thinking out loud. It would be pretty cool...