Olympus OM-D E-M1X
The E-M1X is the only twin-grip Four Thirds camera on the market squarely aimed at pros - it's large, fast and tough-built. But its price tag puts it in a tricky position, as plenty of other larger-sensor cameras can be had for considerably-less coinage - many even offer more reliable AF.
Current Micro Four Thirds shooters who want a twin grip camera to photograph fast-moving subjects.
Anyone not already heavily-invested in Micro Four Thirds glass. Those seeking a small, light camera.