Canon 1Dx at full speed on studio strobes

Australian fashion photographer Georges Antoni lets a Canon 1Dx loose at 14 frames per second at Sun Studios. Update: I’ve since been advised that it’s likely the camera was shooting at 12fps, not 14, as when shooting at 14fps the mirror locks up, and the viewfinder becomes useless. Also, the lights being used were the Broncolor Scoro system. Update: See also this video from Sun Studios, which has some stills at the end of it.