Climbed with Mark Hallam and Al C.
When I first resd about this route, years ago, I learned that if the Grenzsattel isn't very corniced, it's dangerously icy. There isn't much in between. It's not the most difficult part of the route, but unless it's in shape, it's easily the most dangerous one. And so I though my chances of ever climbing this route were slim. Even a few days before, we didn't really expect to do it. But as we arrived in Alagna we heard good things, and a few days later we found that it was as good as it gets. The one-sided cornice wasn't too bad, and we had a trail to follow.
After completing "Traverse of the Tops" and a night at Signalkuppe, I completed this climb with Rob G aka RGG and also Al C, in fine conditions. One of the best alpine climbs I have done.