Extremely expensive by plastic iPad case standards, IvySkin's Quattro-T5 ($70) is a metallic-sheened, soft touch rubber-coated hard plastic shell with a touch-through glass screen protector. The concept behind Quattro-T5 is essentially to offer an almost completely protective solution with the ability to morph into a battery pack-assisted "SmartCase," though IvySkin didn't provide the battery pack for testing. Without the pack on, the case's standard…