Yes - I am finding it quite relaxing not having to hump a load of gear around and the quality is great. I need to find a good bag to carry my gear and filters - once that is sorted I will be taking this little camera on more outings
it was never intended to replace my Nikon kit. My D500 paired with the 500 F4 is as good as it gets for wildlife and my D810 paired with 4 great lenses is as close to perfection as you will get for landscapes or people photography. Now the D500 is safe but I am not sure about the D810 yet
I am no pro and earn my living 9 to 5 Mon to Fri sat behind a desk - so the only thing I do with my photos is stick them on Flickr, sometimes on here and into an occasional competition. For that type of thing I don't think you would notice any real difference between the output from the Oly or the D810.
My bank balance and back would thank me for chopping in the D810 and lenses but I would need a good few months to make sure that was the right choice before making that jump