Much like Incipio’s NGP and other single-material playthrough-style cases, Field Case is pretty simple. It fits the iPad mini well, and while a handful of the samples we received were clearly designed before the introduction of the Retina iPad mini—they’re lacking a rear microphone hole—most are properly molded. Magpul let us know that all of its Field Cases going forward will have the proper cutout, and if a customer ends…