Building an Igloo if camping is not allowed? (Switzerland/Liechtenstein)

I was really curious now and that's why I just had a call with a woman from the Bundesamt für Umwelt, the official federal office that is responsible for tourism in Switzerland. The woman was a little bit suprised about my question but was very kind. She told me that generally wild camping is not allowed in Switzerland (and Liechtenstein). But this law is not enforced really strictly. It heavily depends on the region, the situation and the individual police officer that will encounter you. This means, if you do wild camping where you don't disturb anybody, and where you don't litter the environment, or in very remote area, it is very unlikely that you will be traced down by the police. This is even more through for an igloo. As the woman of the office said, also igloos are theoretically camping. But it is very very unlikely that the police will get you out of it. Even so, if this would happen, and you really have to pay a fine, it is not very high, something around 80 to 100 Swiss francs.