Yesterday:
Suomi M+Gs (two row), 26x1.75, on a '90s Specialized Hard Rock. Don't recall the stud count. More than the entry-level Nokians, I reckon 120-150?
45-ish PSI
30lb of bike, 140lb of human, 15-ish lb of pannier content
Mix of plowed and unplowed (or blown-over) streets, plowed and un-plowed (or blown-over) paths. Lots of "urban canyons" in shade all morning, esp. with the low sun angle. Un-plowed and blown-over segments were a mix of slush and ice compacted from other vehicles. A few patches of black ice on the plowed sections. Bike was absolutely sure-footed.

Today:
No additional snowfall, roads were mostly dry/clear. Small patches of snow on driveway aprons, shady spots, etc. Different route, no path use. Switched to secondary wheels with generic Kenda 26x1.95 knobbies @ aprx. 45 psi. No traction issues