Not so difficult from the technical point of view. Not easy to find the right way, there are many "ometti", sometimes too many, especially during the descent it's easy to wrong the route creating big problems.
Did it twice. First in 1999, it was the first alpine route I and my climbing partner ever did: it was a complete disaster and we even opened a new variant true the south face (about grade V!). We even traversed in the middle of the south face (I still shit my pants if I think of it!) thinking that we where in the easy traverse near the top of the route! Then suddenly we heart others climbers behind the corner and followed them easily to the summit.
A year and much experience later I soloed this route without any effort. Its really an easy rout but be careful to take the right track. The route is more like an enjoyable giant scramble over mostly rotten rock.
Check the belaypoints!
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe