I skipped the 5D4 and kept shooting my 5D3 and 5DSR, although more and more I was using my Fuji X100F. Anyhoo I bought an EOS R with 24-105 kit when returning from overseas as I got it around 35% cheaper than UK prices at the time. I will admit, initially I didn't like the EOS R. The AF-On button is no longer in a natural position for the right thumb, and the lack of joystick really ground my gears. With the firmware updates it has improved, and the video quality from it has really impressed me. The 4K might be cropped, but wow is it good quality at the high bit rates. However, I've had a real struggle with the EOS R when adapting my 70-200. It has just been awful. Every other lens adapted has been fine, but with the 70-200 and moving subjects I've found I had to get the 5D3 out.
Because of this I've spent the last two months looking into Fuji, as the X100F is my favourite camera I've ever used. I am about to pull the trigger on a Fuji X-T3, and will look at getting the X-Pro3 when it comes out, and they'll become my pair of primary bodies.
I appreciate what Canon did with the EOS R, they are moving in the right direction, but after doing the financials I can set up a Fuji kit with very good Fujinon lenses to cover my needs for much less than what it is going to be going the Canon RF route as the lenses are coming in VERY expensive in the UK.