Mother of Pearl, there is just no escaping how fragile these damn cylinders are
In my case, I went down hard, against a steep incline. (offroad, sorry to dirty your post) and I guess I've been lucky. Brand new ralley pants torn open, hole in my leg, etc.
Can't expect NOT to damage the cylinder covers with a boxer engine, my own fault for not having guards on.
In the defense of the bike, I went down A LOT that specific weekend (intermediate course when I only had beginner skills) and VERY LITTLE damage to the bike (other than mentioned)
I shudder to think if I'd been on another brand what the bike (or me) would have looked like.