With an asking price of just $35-40 + very fast global shipping (<1 week), the Shoten NF-NZE adapter is a no-brainer. Exterior finish is nice, and the bayonet-mount fit is 100% -- no play whatsoever.
I'll dedicate one to my Noct-Nikkor and the other to the Canon TS 35/2.8, provided the latter lens has sufficient image quality for my IR work. Test shooting in progress, so far everything looks good although image contrast is on the low side compared to modern optics. Perhaps I'll return to the PC-Nikkor 24mm f/3.5 in the end? The Canon is a neat thing to play with, though.