Oh, first I've heard about that stuff. I must lead a sheltered life. Is it like Betel nut leaves ?
Anyway, if the law is enforced as seriously as the Cannabis one is, it will be a total waste of time ...plus the 'racism' card will be played.
Personally I'd fine anyone and EVERYONE in possession of any amount of banned drugs a minimum of £500.
Either it's against the law or it isn't !