Another advantage is that you can operate the camera with normal batteries with this handle. This is a real advantage especially when traveling.
Itself I use only when traveling or when I do a lot of portrait images the camera handle.
Overall, I must say that I am very satisfied. When traveling, it is a clear advantage and in any case worth the money. If you do not need the extra power process is probably the better option this handle because the price is just in front of a lot less.