The most recent "everything proof" case for the iPhone 5 is Seidio's Obex ($80-$90), available in packages with or without a belt clip. The hard plastic case comes loaded with warnings and disclaimers -- multiple stickers and inserts alike -- indicating everything from the right way to open the case to how to install your iPhone, and recommending that you test it underwater before trust it with your device. Its two halves snap together over the front…
