Hello,
i'm at the moment in kasachstan and came this way from Pakistan. That's the Torugart Pass in "kirgisistan" witch you have to take to go china-pakistan. For me that way was to expensive so i came pakistan-afghanistan and than tajikistan. This way through the north of afghanistan is quite alright and save. I think a bad situation can arrive every time. It's a matter about luck. But there where a few people who did that way in the soon past. Only for the Khyber-pass on the pakistan side is not allowed to drive with a motorbike so you have to put the bike on a pick-up.
so long
flori