I used a Nikon Z7 with the kit lens (24-70 f:4) and imported the images to C1 v12, which now includes a profile for the Z7. The issue is that C1 does not recognize the lens correction parameters that are now stored inside the NEF file and there is not a separate profile for the Nikon S 24-70. This lens has visible distortion (LR and Nikon Capture NX-D do not allow you to turn off lens correction), especially a pronounced pincushion distortion at the long end.
There is a workaround however (not ideal to me), which is to convert the NEF Files to DNG. Now C1 can read the lens correction paramenters from the DNG file and apply them. So far the colours look fine and will report if I encounter any issue with this approach.