Sold with or without an integrated, non-detachable belt clip, Case Mate's Signature Leather Case for iPod touch ($30) is a simple leather-covered hard shell that lets your iPod touch slip in through its top hole, providing access to its bottom ports through a wide bottom hole. Using Case Mate's typical Napa leather, the case covers all of touch's back, much of its sides, and part of its front; a full-screen film protector is included for its face,…