BrissyP,
Thanks for the pictures!
I've only been inside a Honda Forza, Suzuki Burgman and the LIKE200I a couple of times - but each time I found the same fine blackish dust coating things as seen in your pictures. It is quite normal I think. I never did the brake/throttle thing to clear the clutch judder.
It will also be found inside with the roller weights.
No idea if it is road dust, belt dust, roller or clutch pad dust - or a combination of all - but it is always there after a few thousand miles.
Crisp throttle on take-offs helps the clutch lock-up soonest, minimizing slip & glazing....but not always it seems. Lots of Burgman guys deal with it every day.
Perhaps it's down to weather, road surfaces, rider, engineering and materials used by each manufacturer?
BTW, your clutch pads look to have a lot of miles left on them.
Stig