I treat them the same as other cuttings. As long as the foliage continues to develop I'll leave the inflo. If I don't see any foliage growth I cut the inflo off so more energy can go to root development.

I agree with Karyn. energy put into the inflo is subtracted from rooting so if I want more roots, at any sign of weakness, I cut the inflo off. If I don't need to see the flower, I cut the inflo off.