I just finally got rid of my Canon DSLR gear after 20 years. It has served me fantastically but technology is moving forwards and it was all starting to feel a bit archaic and cumbersome.
The Panasonic G9 is a brilliant little machine. The only real compromise is the sensor but even there it's only really DOF control that is the issue and there are ways around that. It handles noise at 6400 ISO remarkably well - indistinguishable from the 7D2.
The weight/size saving in the 70-200 2.8 equivalent alone is obscene!
The 7d2 isn't exactly a high-ISO beast though. I wish 6400 were enough for some of the stuff I shoot.