Substantially similar to many other leather folio-style cases we've previously covered, Mophie's new Workbook for iPad ($60) combines an iPad holder with a folding front lid system that protects the screen when not in use, and opens to provide varying angles for video viewing and typing. Made from faux leather, Workbook is more distinctive for one of its colors -- orange with a black elastic flap strap -- than anything else. All-black and white with…