Great review. Personally I find matching Canon Cine cameras quite painless. For example I work with C100s and GH4s quite often and they aren't difficult to match. I've always struggled more with the Sony 'colour science'. So whilst I know that the FS cameras - particularly the FS5 and 7 are fantastic I'm always hesitant to use them in conjunction with other brands like Canon and Panasonic. I avoid the otherwise excellent Sony A7s and A7S Mk2 for the same reasons when having to use with other types of camera. Plus I still love the Canon image - especially rendered from the Cine cameras.