Climbed the Niedermann-Anderrüthi on a grey august day. We didn't need crampons for the approach. Because we where to lazy to take a topo with us we didn't climbed the second and third pitch of the route. We went straight up on a route called "Voodoo" (a Remy route), wich offers some very nice cracks (UIAA VII).
Although a great route, but I still prefer the Niedermann on the Graue Wand.