thats fine for your own motorbike,,,but its useless for track days,, they check the for the sticker,,,also when you come off and crack your head open like an egg you might have a hard time sueing them,,,,and there is good money to be made sueing them...
I know of 2 people with payouts in excess of 300k
personally ,its not something I would mess with for the sake of a few bucks...