Yeah, I tried to give Earl a couple of pointers, but he's set in his ways. Just because it's worked for several world championships doesn't mean it's going to work again.
I was thinking more of the mechanics but I imagine spending a lot of time in pool halls from a very young age may either appeal to less straight laced people or help loosen someone up. I don't think the structured training hurts the personality, just that they don't get the experiences of working through pool halls. Then again they don't get as many guns drawn on them either, dead people have NO personality. I did think it was pretty hilarious when Joshua Filler faced his wife Pia in the European open, watch the first 6 seconds: