UKC

Both currently available with kit lens for c £900, both clearly capable of producing great images - which is best for the hillgoing photographer who wants light weight, great landscapes and the option of wildlife?

I can't compare the cameras as I only own and have use the Olympus but I love it. The weight, picture quality, and usability in the mountains has been superb. No complaints!

I’m more than happy with my Olympus as a compact camera (I also shoot full frame Nikon) 

i suspect the dynamic range will be slightly better on the Fuji but for nature photography you get more bangs to your buck on a MFT zoom lens.

worth noting the Fuji isn’t weather sealed and some of the controls are accessed through the touch screen not ideal for damp cold weather and gloves.

the Olympus weather sealing has been excellent on my Olympus.

the Fuji XT2 is available on various deals,I would definitely consider that if you can stretch to it.

https://www.jessops.com/p/fujifilm/x-t2-mirrorless-camera-in-black-with-xf1...

Good point about the X-T2, but much of the appeal of the the EM5 is in its size and the light weight lenses which ends up giving an easy carry.

One of my caveats with the fuji system is that I'll struggle to justify the cost of glass past 300mm ish (35mm eq)  with the affordable XC 50-230 getting me out to about 340mm vs something like the Olympus 75-300mm getting out to 600mm.

For context I currently use an Olympus XZ-1, which is a lovely camera but only has a 1/1.7" sensor, so APS-C or m4/3 will both be a much bigger sensor for me.

I just picked up a second hand E-M5 II (body only) from Wex for under £400. Was really impressed by the quality, would never have known it had been pre-owned. Came with 3 year extended warranty.

Worth considering as you can spend the money you save on glass.