I know the Sony A7R is a hit. But I haven't seen any professional wedding photographers using this camera on location. Are they still prefer using the DSLR like the Canon 5DM3.......if this camera is light weight and good quality, why don't they use it ? I myself is a Canon shooter with the 1DX. Tried the Sony once just find it complicated LOL plus the LCD in the back can't turn off. It bothers !
Is Mirrorless has faster focusing?
Buying new gear is NOT what pros spend their time doing. It is what amateurs do.
It is just not prudent for a person who depends on their tools to pitch them for an entire new set just because of web buzz.
Sure, the gear may be good but a pro has specific needs and the last increment of putative IQ is not one of them despite what you may think.