Well, you just need some practice :P
French people with AZERTY keyboards have to juggle with weird WASD defaults all the time, after a while you get good at it (French WASD equivalent would be ZQSD, which is used in this game).
(Of course I agree that it's better to default to WASD for the "normal" QWERTY-like layouts and let the French deal with their poor national layout, but now we know what we have to endure in 99% of games - that's why a UI to change key bindings *really* matters).