"oh well, let us stick to science. let them have their beliefs and intuitions!" -Medhat Nasr
I would also not want an overwintered but decrepit, on-her-last-legs, queen in an overwintered nuc. And this years early graft does NOT count as overwintered! Seriously, what part of that colony overwintered? In an overwintered nuc all the bees and brood are daughters of last year's queen. In a spring nuc all brood and most/all need are daughters of this year's queen. Otherwise it's a split. Many folks sell a split and call it a nuc. Imo.