Real leather and ballistic nylon are a winning combination for cases and bags, the reason we're actually excited by Padster's Original Bag for iPad ($165) despite its steep price. Designed to have unisex appeal with minimal limitations on quick user access to its contents, the Original Bag dispenses with clasps and Velcro in favor of only one type of seal: zippers. A large full-grain leather flap covers the bag's single major compartment, which can…