Represented in the U.S. by BR•F
You are right!
Possible Dual Gain Output on a prosumer/enthusiast camera is huge and very exciting, and I am happy to learn that the concept is being implemented by Canon. However, for the purpose of nuance and perspective, it is worth mentioning that the concept is not new. Dual Gain Output has been implemented by ARRI from the very first ARRI Alexa with its ALEV sensor, the camera that kickstarted digital cinema.