Picked up my copy of the 50/1.8 S-Line Nikkor last night and had occasion to pull off some shots in the darkness on my return home.
Short story, this is probably the best 50mm ever made by Nikon. Really wets my appetite for getting to know the 58mm f/0.95 Noct S due to arrive in early 2019 (and pre-ordered).
Sharpness extends all over the frame even with lens set to f/1.8, more or less the same behaviour as my 35/.8S. Handling of point light sources is excellent and coma is very low - my first impression is the new lens trounces the old faithful Noct-Nikkor 58/1.2 in this respect. Early days yet, but I am enthusiastic about the 50.
Nikon Z6, 50/1.8S, f/1.8, 1/160 sec, 2500 ISO