I for myself don't bring uke down. I secure his head on my shoulder and pivot (90º, 180º, don't really care) or not, irimi with the back foot or not, and throw down. Or that's what I think I've been taught.
If I try to bring uke down without securing his head tightly to my shoulder, my uke will attack my legs. But maybe I just don't do that particular variation right, so let the fault lay on me