When we had the Z demos a couple of years ago I took the Samyang 14mm along and it did not work . Sent the Z into lockdown. But things have moved on and if it will work via its lens chip then its a big tick towards getting a Z.
I know I can get a $40 dumb mount but would prefer the auto exposure mode.
I could change the chip to one from "Nikon Gear" which I am told works with FTZ.