Riding in Switzerland with exhausts that exceed the legal decibel limit is illegal. Not sure why you think that's legal to do.
You will not be allowed to ride the bike unless it is made legal again (bring your baffles) or you get it transported to the border.
It's not a big deal. Arrow, Akra, LeoVince etc all are allowed here with the baffles and they are the exact same models that they sell throughout Europe. Things like Scorpion are not allowed though, but then they're often not allowed in the UK either as they're branded "not for road use". Most people ignore this though.
Oh, and never ever ride here if you have removed your CAT! The fines are incredibly painful, although that will soon be the case in all of Europe and France already hit you with a fine for doing that.