Although Bella Cases uses both Turkish and Italian leather in its cases, we're not quite sure which went into Smart Libretto for iPad 2 ($120) -- not to be confused with Vaja's similarly-named case. Although it's rather slim, Smart Libretto follows the same model as most folio-style cases: there's a frame on the right to hold the tablet, the front cover connects to the back -- in this instance, with snaps -- to form a stand, and button coverage isn't…
