Any tranny that has a manual clutch over a clutcles pedal shit.
They say its fast. And it is, but this is a debatible subject. In F1 they are needed simply because of the insane speeds, were you dont have time to reach for a gear lever.
In road cars a true manual will be better and faster. If you take the 360F1 and a 360 with a normail manual and run them around the track the the 360m will be faster as long as the driver knows what he's doing.
A true manual simply offers heeps more control over the F1. Its hard to explain unless you try. Try race sims then you'll understand
In a true manual you can shift a few gears at the time, in F1 you got to go one by one and when braking this is a big minus.....