Yes it was made like that to follow Swiss regulation in safety domain. Like for example if a bike had to go into the back of your car he may have been decapited with the rear wing. So we just had the small spoiler, but Eggenberger made a "safety" version of the big one with lot of modifications to suit the regulations.
I live in Switzerland and belive me I never saw this wing in real (only saw the big one on french cars). Only the small one.
