Face it, people shouldn't be buying the Wii for the control scheme in the first place- they should be buying it because they're tired of playing WWII games since 2001.
As far as this Fusion technology is concerned, it's just banking on the novelty of the Wii controller. The games written for it won't feel polished and the whole thing will fall through. This has happened with every other "unique" controller scheme since the power glove.
Where the Wii differs is that they're starting from the grassroots with the Wiimote and providing no substitutes.