Innsbruck is interesting, haven't been to Lugano.
Sion with an initial altitude of 17000 feet and six degree glide (ad elevation about 2000 feet) is at least very scenic.
Samedan (St Moritz) is relatively tricky considering that it is VFR only, lots of high mountains (msa about 15000 feet) and lots of aircraft at times in all sizes between small sep to G550 and the like. And it is not a controlled airport.