Ten One Design has reveled its new Tango case for the iPhone 3G and iPhone 3GS. The Tango is a vertical flip-style case featuring a full-grain leather exterior, microsuede interior, storage pockets on the outer rear for cards or similar items, a custom clip to hold the iPhone and the included Pogo Stylus, and access to all ports, controls, and the camera when open. Ten One Design’s Tango case for the iPhone 3G and iPhone 3GS is available now…