In reply to Brev:
Last weekend there were an alleged 19 people in the Hutchie on the Saturday night (although I'm told one went outside to sleep). Don't know quite how that would have been possible, but have seen some distinctly odd photos.
Sure, you might end up there all on your own, but a tent/bivvy bag is probably a good idea for a fallback.
By the way, the snow at the weekend was all freshly drifted and quite a hindrance at times.
An alternative to sleeping in the Hutchie is to base yourself at Bob Scott's and do Beinn Mheadhoinn one day and Beinn's Bhreac and Chaorainn the next. All are doable in a day from Scottie's.
Post edited at 13:53