Having warmed to mine, I've gone a bit cold on it again. The controls remain small and awkward and it will never be pleasant to use. Bearable, but always faintly unpleasant.

The mysterious refusal of the AF system to work at all sometimes - it just plain refuses to focus on a perfectly straightforward scene, you can try and try but it gets as stubborn as a donkey - makes it hard to trust. It does lovely work when it wants to, but Canon have a lot of work to do before this work in progress is ready for prime time. Maybe the EOS R Mark III.