In reply to planetmarshall:
I only did it once, and it was fine.
Not sure I would recommend it as a general thing, but it was fairly straightforward on that occasion. I believe in ascent it has a significant feel of serac collapse (but so does the 3 monts route, as is by now very well known).
It does also get you to the Plan de l'Aiguille level, not the Midi.
The main Italian descent by the Gonella hut is pretty long and I was told of a significant rock-fall incident there as well. I suppose when push comes to shove, there is no "safe" descent of MB, but the more I hear about the Gouter, or rather the couloir (never having done it), the less I like the sound of it.
Post edited at 11:41