Not that I want to hijack but - very good point - is that 2500 SC rpm or 2500 crank rpm?

I thoguht the charger was always engaged when you were in gear, but not in Park unless greater than a certain rpm.?
I thgouht that was the beuaty of the SC over the Turbo - no lag...what you are descibing would "lead to a lag" - pardon the pun.

I have an SLK230 and I recall something around this clutch logic.