My readers know I am not a fan of the EOS-R camera in its current form. A major firmware release is expected the first quarter of 2019 in addition to a slew of new RF lenses. There is little to indicate what is included in the new software right now but suffice to say it cannot fix the major 'problems' like a single card slot, lack of a thumb wheel, around 3 fps burst rate in Servo AF with Dual Pixel RAW files, unimpressive battery life, etc.
If and when Canon announce their EOS-1D full frame mirrorless camera, I will take another look at their offering.
I will be off on my wildlife photography shoot, the first tour of the new year. You can follow my travels on Facebook, Twitter and Instagram. See my equipment bag and works on MichaelDanielHo.com