On control wheels, no problems so far.
No reason sony should have any issues there, surely they simply use the KM designed parts? Or maybe they changed them to save a few $$
I know the A100 seemed to have a rubber handgrip falling off problem, no idea myself..I didn't buy one.
Now if the A100 had "km colours" I might have..another "awesome" Sony decision.
The A200 LCD is soft as butter though, look at it and it gets scratched..bit of a joke really. Ist one that went back got scratched in the ist day. And all my photo stuff is minty..I look after it. You have no choice but to buy a screen protector for them. KM5d one is tough as nails, shame sony couldn't use that part..again.. I suspect saving a few $$ here and there.