Brooks Cascadia 7, Kahtoola Microspikes, NRS Hydroskin socks, Smartwool thin liner sock, ID shorty e-vent gaiters.
This photo is from yesterday: 6 hours of postholing in fresh snow to the summit of Mt. Baden Powell with Adan. He had essentially the same setup, minus the gaiters, using a thicker wool sock, and a different brand of shoe. He was a bit warmer than I was.
Temps were all over the place...well below freezing with windchill on north faces, 75 and sunny on south faces.
My feet were getting a little chilled, but primarily only when stopping on exposing myself to windchill on north faces. During activity, the hydroskins and wool liner were enough. Next time I'd go with a thicker sock though.
Understand that the hydrosocks aren't waterproof; they wet out, but trap heat relatively well if you're active. They will get pretty cold or even freeze if you stop too long though.