Made from the same semi-hard TPU plastic as several of Hard Candy's earlier iPad cases, the same company's Gumdrop Case-branded Moto Skin for iPad ($40) is a grippy case with a tire tread theme, available in four colors. Leaving the iPad's ports, buttons, speakers and microphone exposed, Moto Skin otherwise protects all of the device's body save for the screen -- once again, no screen protector is included in the package. Tailoring of the holes is…