Mine has it (6MT), and I usually leave it off, but then again, I drive mostly on the highway. The few times that I have used it, it's worked very well I must say. However, if I shift to neutral before coming to a complete stop (as in just slowly crawling to a stop), it still shuts the engine down. It's pretty awesome how quickly the starter works when it fires the engine back up. I tried to see if I could "beat" it to 1st gear, but everytime, no matter how quickly I try to press the clutch in and go from N to 1st, the starter wins.
(I picture a German engineer thinking "of course it wins, why would you even think otherwise?")