Well, I went into the hives briefly today. It's odd how I never seem to find what I think I'll find when I go in to the hives.
I did have bare-frame deeps over the brood deep, and below the partially filled with honey and comb supers. Today there are 1.5 to 3 frames with brood in each middle deep. The supers still had comb and some honey. All boxes had a lot of bees.
So after thinking a little bit about the conditions of the hives, and the time of year (and mumbling a lot), I made the command decision to go ahead and put the feeders on each hive. I won't get any honey this year, but hopefully they'll finish building comb and have plenty of stores for the winter.