Alright Harry,
They always say that doing computer games does not help. That said I refuse to believe that my playing Perfect Dark and Goldeneye on the N64 didn't help my reactions. Getting a feel for how small hand movements will affect something moving on screen must be slightly adventageous. But then maybe the learning part is more important. As long as you show improvement on the day and all that...
Have you got some tests lined up yet?
Bunty