A.B. Sutton has introduced its new Sport Slip for the iPhone 3G. The Sport Slip features a play-through design, with openings for access to all of the iPhone 3G’s ports, controls, and sensors; the customer may decide whether or not to leave an opening for the Dock Connector. Other features include a high-quality leather exterior with baseball-like curved seams, silk lining, and options such as a braided leather strap, silk-backed monogram, and…