I bought this camera as a second m4/3 body for 4K video shooting and vlogging. The G85 has exceeded my expectations. As my primary goal was a portable handheld video platform, the G85's excellent 4K and 1080 video quality and 5 axis in-body stabilizer deliver the goods. The video is outstanding and leaves my other cameras in the dust. Combined with a microphone input, it is a perfect "run and gun" video platform for enthusiasts and travellers. The only other camera I own which comes close in video quality is the Panasonic LX-100.
I am surprised how good the G85 works for stills. To my eyes, the output is as good as my Olympus EM5 MKII. In many ways both cameras are similar and I think both share the same sensor. I shoot RAW, so in post processing, there's little no real difference at all. Where I find the G85 has an edge is faster autofocus, this gives it an edge in low light shooting and capturing birds with a long telephoto. For my large hands and stubby fingers, the G85 is easier to control. I had to add the optional vertical grip the Olympus to use it comfortably. So, if you have larger hands, I would say get the G85 as it already has a chunkier grip right out of the box. I find the button layout and menu system more logical and faster to access the most commonly used features. The customizable Q-menu is a clever idea and allows one to make the camera work according to one's needs. I have no complaints with the G85's ergonomics or the button layout.
As mentioned, I bought the G85 as a video camera, but given how great it works for stills, it's now my "go to" camera for travel and fun.
As someone who has owned many cameras over the years, including APS-C DSLRs, Panasonic hit one out of the park with G85. Short of buying the flagship models from Olympus or Panasonic, IMHO the G85 represents the best all round micro four thirds platform to date.