In reply to A Longleat Boulderer:
There's a 6b+ (probably old skool grades... ) in Piola's 'Topo du Massif vol 2', on (or near) the SW arête of the gendarme. When you do the Cosmiques Arête you can pass in front of or behind the gendarme. I guess this route is accessed from the version that goes behind it.
You may or may not know that there are also routes on the other gendarme and also on the buttress underneath the viewing platform that the Cosmiques Arête finishes on, called the Secteur Dernière Benne. I think Lopez may have a photo of a route on this one...?