um why the hell would they drive around the entire qualifying lap with the DRS open & this so called mythical DRS operated F-Duct front wing ? If the car was producing that much downforce with it activated then they would just run less wing at both ends of the car.
the DRS closes under braking into a corner anyway, the Merc last year had a problem with the flow re-attaching to the wing which caused unbalancing issues, but other teams managed to get it right, it would be more beneficial for them to have an F-Duct front wing that just reduced the drag at certain speeds that's not linked to the DRS system, as this can't be used at any point in the race.