[Lawrie]

Well my plan at the moment is still to have a switch library option in the overflow, and the current library will be shown on the popup to select the library to switch to. If you need a more immediate indicator of what library is active, I could always pop up a toast notification when the app is first started to indicate which library is active for users with multiple libraries.

Hi Mike,
I suspect I'd be satisfied with the overflow solution.  I was just trying to avoid keypresses I guess.

As for the toast notification, I wouldn't be averse to that at all, but I also wouldn't treat it as a priority, especially once the overflow functionality is available.