As a matter of fact, I think Grischa belongs in Cycling. Grischa, who I happend to have trained with quite a couple of times, is a good guy and surely someone to teach riders of any age and class a lot.
When my kids are in school, I want somebody to tell them about drugs. I want this guy to be an ex-junkie. I want my kids to be confronted with the truth. I want my kids to ask questions, and be given answers that may be disturbing. I want to have the chance to talk to my kids openly. I don't want my kids to take drugs (and if they do, at least do it responsibly because yes - alcohol, cigarettes & painkillers are drugs, too). My wife thinks the same.
Go Grischa!