There's two stations in which this might be feasible since they're not on regular service track - however they're still used for storing trains and sit on track used for moving trains around.
Unless they're dropping enormous amounts to dig extra tunnels and divert train flow, yeah no.
http://sleepycity....of-the-Paris-Metro - the third picture down is taken in the station they've "used" for their mockups. It's not even tiled.