The ATB unit can only direct the torque away from a free spinning wheel. If you drop the clutch at 4000rpm (as people are suggesting is good practice for pulling away) both wheels will either spin or you'll stall the engine, quaife ATB or not.
Yes, it can help with moving the torque to the wheel with most traction, but it can't limit the torque generated by the engine..... the power has to go somewhere.
I think these are bloody good bits of gear but the idea that it can prevent wheelspin altogether is a bit far fetched considering the mechancial nature of its torque control..... still, cheaper than traction control and you get a quaife sticker on your car)
Pinkrinse..... who has the ATB for sale... I've been looking at these for a while