I think neil found out about this the hardway. He was moving about in silent mode at a wedding being stealthy. Thats how Mautner found out as well......so there goes sllent mode for wedding needs. Personally I think the little click that the current mirrored cameras make is not bad at all so i would assume thats what the mirrorless would also sound like.
Silent mode is awesome, but with the exception of the Sony A9, also limited. You can't use it for action, and you can't use it in certain artificial light.
My Sony A7r3 shutter sound is quieter than my 5D3. I haven't shot a Canon R recently enough to recall the shutter sound.



