I'll wait for some fgc members to review it. Ain't got time for fried usbs or disrupting other players.
FGC? There are plenty of reviews out there. I think in one of the posts above its suppose to be reviewed on wpcentral here sometime soon.
There's no reason to believe it will fry a usb port, it doesn't draw any more power than any other peripheral.
As for disrupting other players, i'm not sure I understand what that means. If you mean by using one you'll dominate the action and matches, then just don't use the GamePacks or controller mod features. It works great for cross over controllers and keyboard and mouse support. You don't have to use the mods, they are just available in case you want to use them.
Of course if you don't want to use these features then there's no need to buy one. I won't push one on you, but having used one myself for quite some time, i can honestly say I couldn't imagine not using one. Its one of those things where you don't realize how nice it is until you use it and then once you do you can't imagine life without it