Reports back from Switzerland are that all areas have a large base, and have had a lot of fresh snow in the past couple of weeks. So, looks like you don't have to take your rock skis!
Davos was suggested for easy access, but the World Economic Fourm is there next week. Davos will be overun with a few thousand "high-profile" people- not only politicians, but business leaders, rock stars, and hob nobbers.
Top alternate suggestions were Arosa (near Davos) and Engelberg (near Lucerne). Both are primarily intermediate areas, but have challenging terrain also. I think Wengen would also be a good alternative, but not suggested by friends in Zurich (not sure why- my guess is crowds). If you want to keep your travel time down, they suggested Ibergeregg and Hoch Yibrig- both very close to Zurich, but small.
Have a great time!