I really can't fault it.
Both in auto and manual modes (whether using the stick or paddles) it is good.
One feature I really like is the fact that if you are in auto and have a situation when you need to be in a lower gear, like anticipating an overtaking maneuver, then you can drop a gear or two with the paddles.
If there is no further manual input then it reverts to auto within a few seconds.
The only thing to remember is that when stationary with the engine running (ie the stop/start not in operation) you do have to select neutral with the stick to avoid unnecessary clutch wear (as per a normal manual box).
PS: There's more info here with additional links:
http://www.2008ownersclub.co.uk/forum/topic320.html#.VKP2MyusUTA
Edited by: allan40alt