While there’s no shortage of heavy duty iPhone 4/4S cases out there, Ivyskin used the 2012 International CES to throw its hat in to the ring with Wrangler. Available on January 14 for $70, it combines pretty much every material you can imagine: polycarbonate plastic, TPU, TPE, carbon fiber and metal, all in a triple injection co-molded design. It does introduce some unique features, such as a “watch dial” silent switch cover…