Based upon the same designs as its older versions for prior iPods, DLO's latest Action Jackets for iPod nano 4G and iPod touch 2G ($30 each) come with a neoprene case and a detachable armband. While the iPod touch version also has a detachable belt clip, which is used as an alternative to the armband, the iPod nano version has a non-detachable one that serves to mount the case on the smaller elastic armband. Both have clear, touch-through face protectors;…