Those familiar with DODOcase and other bound book-style iPad cases will no doubt see the similarities in Portenzo's WingTip BookCase for iPad 2 ($75+). Each unit is handmade to the specifications of the customer, with options to customize the colors and features, including an elastic strap (free), magnetic cover lock ($10), camera opening ($5), stylus compartment and stylus ($10 each), and a stand mechanism the company calls IntelliStand ($20). It's…