Weather-sealing: what has real-life R5 experience been?

EOS M6 Mark II
CR Pro
Sep 24, 2012
I'm a photojournalist and have to shoot in rain, dust, and hostile environments. What has real-life experience been with the R5 and either with dedicated R lenses (like 24-70, 70-200, or 50?) or with legacy EF glass and autofocus adapter?
Any comparisons with Sony?
Thoughts re possibilities in the rumored 1Dx-R?
Thanks for your time.