Got it installed on my car as one of the first E55 customers.
It just came in when I had my car at AMG in Affalterbach.
When I came back to pick up my car, they installed it as a surprise for me (I just love surprises).
Great thing to have: it provides more grip and it does look good too. Highly recommendable.

This is an original AMG product, no aftermarket steering wheel!