As nice as both of these cases look, they’re extremely expensive by iPad case standards, which would lead most users to expect great protection. That’s why we were disappointed by the lack of coverage provided by Leather Agenda and Libretto. When the iPad 2 is in the shell, not only is the bottom edge almost fully exposed, but so are the top and right corners to just below the volume rocker, thanks to an L-shaped opening. Because of this,…