I agree that it would give peace of mind.. Have you looked into if the Seat Leon Supercopa runs a standard or modified sump?
If not then really I would say dont worry about it.. If they do, then that could well be the easiest way of getting yourself a baffled sump..
My thinking is that you would have to generate a reasonable amount of G for a sustained period to ever have a problem as it is.. Something that wouldnt be possible on road legal tyres..