I have read the rules, and I have read the examples of play. I've been familiarising myself with Story Now games more recently, as one of my friends said they might run one at some point (And they have in the past, saying that GMing it is tricky.) And actually while reading the Apoc World recently, I remembered I've played it a bit years ago, though I really can't claim that gave me any insight as I didn't even remember it for a long while.
In any case, the procedure of the play is not that complex. It is pretty clear what is happening and where the points where GM can direct things lie. There is nothing magical there to stop this. I fully agree that it would be somewhat difficult and doing so would be kinda missing the point of playing such a game in the first place, but that's another matter. Though
@EzekielRaiden seems to run some sort of hybrid approach successfully.