Well now it is official I must say I'm a bit more underwhelmed with this than the Nikon's, which were also a bit disappointing to me.
Canon and Nikon seem to be banking on their 'name's' and brand loyalty to cover the very poor first FF mirrorless entry's into the market imho. Pricey and lower specced. For anyone not biased by the well know brands the Sony alpha cameras look more attractive after the Canon and Nikon first attempts into this new sector.
The one card slot, done to death I know,

but still has to be mentioned.

Both very poor fps with AF and/or AE, and very poor buffer, though the Canon slightly better for buffer depth, but the worse for fps. Both the Canon and the Nikon should not be having buffer and speed problems with the cards they are using, and the performance of their DSLR's for similar or lower prices with regards to buffer size, and especially buffer writing to the memory card, particularly Nikon. I've said it before, but the D500, 20Mp, can shoot 200 12bit RAW files, and lifting the finger off the shutter with the fast XQD enables the cameras to go again. I know the Z7 files are a lot larger, which will slow down the camera data throughput, but the Nikon's don't seem to be taking full advantage of having the XQD cards. The Sony a9, and even some of the Nikon 1 cameras, show that high fps with AF and AE shouldn't have been a problem.
The prices of the lenses,

if not going for small size, but aiming for high quality, seemingly disregarding size, means these lenses need to be some of the best ever against their competition at similar focal lengths and maximum apertures to justify the prices imho.
For Canon, the 1.7x crop for 4k seems very poor.
The good idea is adding filters to some of the adapters. That is thinking outside the box and using the adapter as something more than just adding space between the lens and the sensor.
Looks like Canon have done a proper battery grip, contoured and with buttons to control the camera when vertical, which Nikon seem to have not done.
