It's possible to do this route from Switzerland, but I describe it here how we did it, from Austria.
For one day this is a long route (starting/returning from/to Lindauer hut takes 8-12 hours, dependent on conditions. Better stay over night in the winter room of Carschina hut).
Although the summit offers fantastic views into the Austrian and Swiss Alps, you should not descend to late, as it's name "Sulzfluh" should tell you :-) (Sulz means very wet and deep snow). The downhill follows the same route as the ascent. Follow the summitcrest to the west until you can enter the Gemstobel.
Ski it down (east now, do not go north or you will enter the Rachen) until to the steep section. Climb down here, then return to Carschina hut, and via Drusentor return to Lindauer hut.
Usual ski mountaineering equipment. I would strongly recommend to take crampons with you, for the steep entry to Gemstobel.
If you have information about this route that doesn't pertain to any of the other sections, please add it here.
"Never say "N factorial", simply scream "N" at the top of your lungs."