One of many cases in Griffin's Survivor line, Survivor Skin for iPhone 5c ($20) seems to be a rebranding of the company's Protector we previously covered for iPhone 5/5s. The molded rubber case is thicker than most, which adds a respectable degree of shock protection, as well as bezel and button coverage. Three holes on the bottom edge provide access to the headphone port and microphone, Lightning plug, and speaker. Survivor Skin is currently…