Alternately billed by Griffin as a "military-duty" or "extreme-duty" case, Survivor ($50) builds upon the multi-layer hard plastic and rubber designs of Otterbox and others, creating a bulky but particularly resilient protective option for iPhone 4s. The clear screen protector promises wind and rain deflection, while the body is designed to survive 6-foot drops onto concrete, blowing sand and dust, as well as vibrations -- collectively meeting U.S.…
