Shimura is now offering its Metal Jacket case for the iPod nano (with video). The hinged metal case features a protective front flap that folds back to double as a stand, and offers full-time access to the nano’s Dock Connector, hold switch, and headphone jack, along with flip-up access to the device’s screen and Click Wheel. The case’s design also allows the nano to be docked when the front cover is folded back. The Shimura Metal…