I'm running one in an FC250. The older style automatic clutches took a bit of the initial hit off of idle from the bike, and some even seemed to not fully put power to the ground at higher rpm's. These do not have that issue.
I'm running the stiffest clutch springs, and the weakest spring in the EXP pack. This allows it to expand and apply pressure to the pressure plate immediately off of idle. If I let you ride it, you wouldn't know it was in there until I told you. With this set up, it essentially just eliminates the potential for stalling and let you focus on other things. If you're looking to eliminate the engine braking, I would play with different springs in the EXP pack, although you will also be changing (raising) the RPM at which it engages the transmission when you crack the throttle.
All told, I am sold on the system. Previously I thought the torque drive system was the best thing since sliced bread, and wouldn't mess with an auto clutch. This is the best of both worlds.