I agree for street and some kinds of landscape photography that the more compact mirrorless bodies have an ergonomic advantage. However, for things like sports

I agree for street and some kinds of landscape photography that the more compact mirrorless bodies have an ergonomic advantage. However, for things like sports, events, and weddings, where you are carrying the pro f/2.8 zooms (which are about the same size and weight whether it is on Sony or Canikon) on multiple bodies, I find that the well-defined grips and balanced handling of the Canikon pro bodies (and the OVF rather than the EVF) are less fatiguing personally.