Originally released in a different form for the first-generation iPod nano, iSkin's DuoBand ($40) combines an intriguing two-strap adjustable armband with a two-piece case for the third-generation iPod nano. The new case is available in black or red, and takes after the company's Duo for iPod nano, though it's missing Click Wheel and Hold Switch protection; a Dock Connector cover and headphone port cover are built in. iSkin's armband has perforations…
