Two new DLO silicone rubber cases have been released for the iPod nano and iPod touch, both under the Jam Jacket name, but each with a distinctive design. By comparison with prior iPod touch Jam Jackets, the iPod touch Jam Jacket Multiclip ($20) has very plain front and side molding, and a subtly elevated ridge covering the Home button and nothing on the sides, but now features a unique swiveling belt clip on the rear. This clip, unlike any other…