After a 2 day delay in receiving my EOS R..I have spent half a day shooting with it. And, well..I am absolutely blown away. It is more than I had hoped for.
It's intuitive like all Canons - the fact I now feel completely confident shooting with it after just half a day speaks for itself.
The touch bar: wow. I heard people saying they were hitting it accidentally while shooting. Nope, this didn't happen once with me. Not only is it amazing while shooting (I have it set to scroll through AF point selection methods), it makes reviewing photos way easier/quicker too.
This is where it gets interesting, and completely surpassed my expectations. I was shooting motorbikes screaming down a hill near my place. AI servo, continuous focus. It did not feel slow at all. 3 frames/sec is just not true. If I had to guess, I would have said that it shoots more frames per second than my 5DIV's. That's what it felt like to me. I bought a new SanDisk 300mb/s card with the camera, so maybe that has something to do with it. But AF speed and frames per second are not an issue with this camera (unless you're shooting the Olympics for a major publication..and even then it would absolutely cut it).
The screen is a ripper. So nice to shoot and review with. I think there's more going on with the sensor than the 5DIV too. Not by heaps, but this feels more accomplished in low light.
Apart from having to learn to shoot with a new system (which took half a day), I don't have anything bad to report yet. If you are on the edge, you will simply not regret buying this camera. I'm shooting with the control ring adapter and my EF lenses. I don't have any RF lenses, nor will I for a long time. I have, however, just listed one of my 5DIV's for sale. I will sell the other one as soon as the next "R" camera is released. This new system destroys the old one.