I would be very surprised to see an OVF camera from Sony - APS-C or FF.

I have never even seen one of the EVFs, so really cannot comment on its usability other than there are many who have switched and love it. You are actually one of the few who have actually used the A77 for a period of time and doesn't prefer the EVF.

As far as 'pros', I don't think that there is any camera or technology that pros do or don't use. I've seen pros at events with P&S cameras.

Terry