Well, not quite. It is still a bit of a lottery what you get. I got two with a third party grip for my 350, the grip was fine but the batteries were utter trash. Two of them wouldn't last nearly as long as a single canon one.
On the other hand, I have two which I think I got from 7dayshop for my 40D and they are every bit as good, if not better than the canon original. Guess quality control varies with the cheapies.