Incase has debuted its new Hybrid Cover case for the iPhone 4. The single-piece Hybrid Cover combines a flexible, soft rubber top for added cushioning and grip with a hardshell bottom that adds durability and a dual-finish look. Features include a topographic patten on the interior, push-through coverage for the volume and sleep/wake buttons, open access to all other ports, controls, and cameras, and compatibility with both GSM and CDMA models…