I got Star Wast The force unleashed II for christmas, and of course I had to have a lightsabre for my Wii remote.
It does give me more credit among friends, than it gives me an enhanced playing experience.
Although it's quite sturdy and seems to be a good quality toy, the design is a little flawed. It's not that very well balanced, and ingame action requirec switching from swordplay to pointer movement, and that isn't too elegant with the lightsabre in it' open position.
I bet' that even if it looks like it's been designed for the game, it's still a licenceproduct, that's been allowed to piggybag on the new gametitle.
Having said all that, it's still a very fun and cool toy to own.