RooCase's Dual-View 360 for iPad Air ($50) is an attempt at combining features from multiple styles of cases, including folios and shells, into one unit. Covered on the outside in fake leather, the case opens up to reveal a microfiber lining and the plastic tablet holder on the right side. That shell can be removed, allowing for a slimmer protector when the full folio isn't needed; it even has its own hand strap and typing-position legs. When connected…