Its exactly the same delay as with the existing tiptronic system - its just that the activation switch has been relocated! I agree that it is slow, but this isnt a result of the paddles.
The only reason i'd want the paddle shifts is to save on fuel really - i often just want to get in top gear asap, instead of climbing through the revs all the time wasting fuel. The only way to do this is using the tiptronic - but i cant be bothered moving my arm over to the side to do it (i know, how lazy!!) - but if i had the paddles i'd be happy...!!
But then you'd actually have to like... pull the paddles! Think how much energy that would use!
Looks good actually.