Flying the Airdesign Vivo 2 and its superlight sibling the LiVi at the same time is a great opportunity to make a direct comparison between a regular wing and the exact same one in a lightweight version. Both pitched as easy B gliders, the airfoil design is identical. The differences are mainly in lighter fabric, unsheathed lines and nitinol instead of plastic rods in the nose. What does that mean for the pilot?