Yes the Nikon Z when I tried them are quite familiar and also how it feels on the hand. The Z cameras are quite natural to migrate from a Nikon dSLR or a autofocus film SLR. The Z electronic viewfinder is also quite good without that sense of motion sickness. When I held it at a NZ wedding expo show here and they had the diff many brand sales reps letting you try the gear.
I went with a Fuji X-T1 cos cheaper and sick of paying retail new prices. It is more different than a Nikon Z but it is more compact.
Correcting myself before. M4/3 is 2x the lens to make it equiv to 35mm format. I know some photography friends one who has a 300mm prime 2x is 600mm he also has a TC so he can do wildlife and plane photography. 1.5x is APS-C which is my Fuji and others like the Sony A6000 series. I think full frame is superior but APS-C even a dated one like the one I have does the job for me .....
The X-T1 is still an excellent camera. I've never handled one, but every X camera that I have handled has seemed really well designed.
I myself just picked up an X-T20 that's an open box camera with warranty. I'm giving it to my son for an upcoming trip to Europe.