Hybrid SLI has no graphical advantage. A hybrid SLI is not any faster than the discreet card alone. The real advantage is the hybrid power that comes with it. So when you are not gaming your card is powered down. Watching movies or surfing the net your PC is quiet and very green using the on board video. Only when you run a 3D game does it power up your card.
If you don't care about noise or power, then it is useless for you.