My experience has shown that you can fast track even with a non *A boarding pass. When showing my gold card at security they don't double check with the tickets usually. There are scanners for eco and biz/first - but that is just for the scanner (in case there would ever be a line). Just after the scanner there is no separation, so I walk to the biz line in case it is shorter and show my gold card. Really appreciate ZRH airport, even without that (LGA and EWR being my new home turf )