We've come across plenty of iPhone stickers, as well as cases with wallet features; Distil Union's Wally for iPhone 5 ($50) is the first accessory we've seen that combines the properties of each into one product. A leather pocket, Wally sticks to the back of your iPhone bare or in a case with a reusable micro-suction material. It holds up to three cards, with a pull tab to get access to them. It comes in either brown or black, and there's also a version…