Panasonic G85 from an Olympus user

The main reason I went for the G85 is the electronic viewfinder.

The Stylus-1, E-M5, and E-M1 mark I cameras all have LCD electronic viewfinders that have areas that you just can't see with polarized sunglasses when shot in landscape orientation. Now, those there are such that I can generally frame the shot and let auto focus do its work, but it still is a hassle to shoot. All of the LCDs are fine if you shoot in portrait orientation, but I tend to prefer landscape orientation for most vacation shots. I tried the E-M5 mark II in the shop, and the viewfinder was harder to see with polarized sunglasses. I briefly tried the E-M1 mark II in the shop during a store sale where the Olympus rep had a demo available, and it has the same problem.

It turns out the Olympus E-M10 mark II and Pen F both have OLED viewfinders.  I've tried these in the store, and I can see the EVF clearly with polarized sunglasses in both landscape and portrait orientations.

However, ever since I got the E-1, I've liked having environmentally sealed cameras, so that if a rain storm comes up, I don't have to put away my gear into a plastic to protect the poor precious thing.  So initially, I was thinking of getting the E-M10 mark II or Pen F as a sun camera, and use the E-M1/E-M5 when it gets wet.  That's fine if I'm taking a full camera bag, but for a vacation camera, I often times just want to take one camera, lens, and a spare battery in my pocket, and leave the bag behind.  We are going to the big island, and it has both a wet side and a dry side.

Then the Panasonic G85 was announced.  It had the things I liked from my Olympus E-M1/E-M5 cameras, notably weather sealing, and 5 axis IS, plus a viewfinder I could see through.  The fact that the Olympus E-M1 mark II was more expensive and had a LCD viewfinder helped to seal the deal.