There's a bit of a bug with the toolbar and fullscreen photo viewing mode. When I go into full screen + filmstrip mode (using the fullscreen HW key), there's no toolbar showing. If I pull down the menu and uncheck then check the toolbar, it appears. But if I leave fullscreen mode and return to it, the toolbar is gone again.
I have one "wishlist" item too. I wish Quiver had an easy way to rotate photos 90 degrees (without going into a menu or making the toolbar show), since portrait photos look much better on the tablet's wide screen when they are rotated to landscape. I would love a HW button mapping to rotate photos. A much cooler, iPhone-like thing would be a touchscreen gesture, a circular motion in the direction you wish to rotate? Maybe, perhaps, a menu setting that auto-rotates portrait photos (vertical dimension = 2x horizontal dimension or something) when in fullscreen photo browser....?