Just noticed this in Bryan's R5 review so far at The-Digital-Picture: he added in a electronic vs mechanical shutter comparison: https://www.the-digital-picture.com/Reviews/Canon-EOS-R5.aspx
Scroll down to the ceiling fan photo.
There is slight visible distortion there, but considering the speed most ceiling fans are spinning, this looks pretty exciting. I was already willing to deal with some very extreme and painful rolling shutter on the EOS R in silent mode when I was shooting very slow, quiet action settings where the shutter noise would cause more problems, so maybe this means that the silent shutter will have even more use in general assignment work. Still will probably go with mechanical shutter on extreme action, but will do my own tests when the R5 arrives.
Scroll down to the ceiling fan photo.
There is slight visible distortion there, but considering the speed most ceiling fans are spinning, this looks pretty exciting. I was already willing to deal with some very extreme and painful rolling shutter on the EOS R in silent mode when I was shooting very slow, quiet action settings where the shutter noise would cause more problems, so maybe this means that the silent shutter will have even more use in general assignment work. Still will probably go with mechanical shutter on extreme action, but will do my own tests when the R5 arrives.