Godspeed mate :)...i think trick in southern france is not useful in play....cause this place is full of alot of players ....it's in the middel in this map .....and it's too hard to do..!!!
When you open the center room's door you will face alot of players ....they wouldn't let you to do this trick....
this my oponion on this trick...and thanks for your effort
mate all this , is a matter of practice and quick movements.... i do this trick at southern france during a full server! there is a difference between roofing and quick pass positions! the second is "tool" to play better
....they wouldn't let you to do this trick.... 
