At least in winter it seems to be pretty much standard practice for the Concierges at ZRH to escort connecting SE's to the Schengen area... then they usually disappear to the baggage area to make sure everyone gets their bags. After that it's off to the check-in counter to welcome the outbound passengers.

I suspect they may not be able to do it in summer when they have both the YYZ and YVR flights to manage.