Already commented on this in LH thread, but exact same issue happened to me in ZRH in October 2014.

They were very clear about the rules, and admitted that they wished the web team would advertise this more clearly, especially since everyone has been conditioned by LH and is under the mistaken impression that codeshare is irrelevant as long as you are on LH metal in F. This is not true for Swiss.

The statement being made elsewhere that "On *A it's the metal that counts" is wrong for Swiss.

If F lounge in ZRH is important to you, do not book as a UA codeshare for PQD.