IGS - Instrument Guidance System at Sion takes you to a point where you can position visually to land. I seem to recall the one at Innsbruck takes you to a hospital car park!!? Convenient!!! The IGS at Sion is called an IGS because it doesn't terminate at the runway. Approaching 26 you will need to reduce your rod at minimums and maneuver posistively around the ridge to line yourself up.
Having been to Sion several times in a BAE RJ100 I'd recommend becoming totally au fait with the visual procedures, the shape of the Rhone valley around the field and procedures to follow if you go IMC inadvertantly.
Best advice I can offer is obtain a weather report (actual and forecast) from the tower there. The local knowledge of weather conditions of the guys in the tower there is excellent.
Good luck.
P.s. They also have arrester cables if things go really bad!!
