At last Nikon delivered a Micro-Nikkor that is excellent, and we can bear over with the concomitant lack of the 'Micro-Nikkor' designation
The 105/2.8 MC is -- by Z world standards -- inexpensive and has near APO qualities. Bokeh is smooth and pleasing as well.
However, the fly in the ointment is the lack of a tripod support. Maybe not an issue when the lens is combined with the heavy Z9, but definitively an issue for the lighter models. There is a quite well built third-party alternative by 'iShoot', but it only provides support for the lens + camera in landscape mode. Or does it? Intrepid action for a few minutes with a Dremel and voilá, the lens now can rotate within the tripod collar. As evidence, see below with the 105 MC on my Zf. (I also took the liberty of replacing the bulky lens hood with a shorter one, as the stock version blocks light for close-up due to the shortening of the working distance as one focuses closer).