Well, I started a 5-frame, medium depth, top bar nuc, with a young, newly mated vigorous young queen. Then later, as they were finishing their combs, I noticed that most of their brood was drone brood, and in drone cells. So I observed the queen for a little while and never saw her attempt to lay, though there were plenty of new worker cells ready for her to lay in. Nearby, in another hive, was another queen, from the same batch, who had practically filled two brood supers with mostly worker brood, so I caged both queens and swapped them hive for hive. A few days later they had both been accepted to their new homes and the fecund queen had begun filling comb with eggs, now in the TB nuc.
Now it is a month or so later and the nuc had long ago been picked up by its new owner, yet I still have the dud queen, now residing in a strong hive. Well, long story short, though still very strong, there are now many new drones, and drone brood in drone comb, yet no brood in any of the worker comb. So, apparently a dud queen, such as this, I wouldn't call a drone-layer outright (drone laying queens often lay drones in any size comb), can keep laying workers at bay. I removed her and replaced her with another young queen, this time one proven herself to be fecund. The dud queen will soon join the other culls in the alcohol jar.
It was a good learning experience, but I think I'm going to need to cull sooner when I suspect a dud, but especially when a queen is obviously a dud.