Unfortunately, things aren't looking too good for any spring / Summer hockey. Apparently all the rinks in Lausanne and Geneva (there aren't too many in the first place) are now closed, or will close shortly. There is some hockey up in Villars during the Spring/Summer and they have pick-up on Friday nights.

During the season I played in a league in Lausanne that was very fun, but only 18 games, so I wouldn't mind finding another team.
If I get any more details, I'll post some information.