Christophe's been co-sleeping with us since birth, in a co-sleeper. We've been talking about transitioning him to the crib, but Pierrette wanted to do it on a night where the next day, I'd be home (e.g. a Friday or Saturday) so that if the sleeping went badly, I could help out the next day.
So today was the first experiment. Pierrette fed Christophe in the early evening then gave him to me. I settled him, then put him down, while Pierrette went to the bedroom to sleep. Half an hour later, Christophe was firmly asleep and Pierrette came back to the nursery with a pillow and blanket. She's in there sleeping on the floor right now.
Ah, mummies. :)