In reply to mike kann:
The answer is, I guess, that it depends on the time of year and the conditions. I did it in 2003, the summer with the heat wave and there was zilch snow on the approach to the climb. So, if you then abseil down the North Ridge , you could easily do it in approach shoes. Indeed, I only took my rock boots up the route - nothing else. If you do it earlier in the season or after a snowy winter there might/will be a couple of snow slopes on the approach and snow at the foot of the climb, then you will need your mountain boots (when I did the North Ridge a few years earlier, you needed them plus axe on the approach for sure.
In terms of difficulty, crux pitches I would say are HVS/E1 depending on your point of view with lots of VS, Severe in between. It's a great route, one of my favourites. You can move together on the easier middle section to save time. I can't comment on the Italian descent as I have always come back down the North Ridge.