Based upon the fabric-based same-named cases for iPhones, and apparently upon earlier versions we never saw for these devices, Speck's new Fitted Cases for the iPod nano 4G and iPod touch 2G ($30 each) are conceptually the same but quite a bit different in execution. The iPod nano version is a clear hard plastic shell on the front -- including screen protection, but not Click Wheel coverage -- while its back, and both pieces of the iPod touch version…
