Hi Looking at the 40D, some of the accessory information isn't up to date. for example, there is a new grip which just seems to have better weatherproofing than the old one, and is still compatible with the 30D. Does that mean the standard BG-E2 will also work on the 40D? Are there any new buttons that woudl be missing? Its just that the E2 can probably be gotten cheaper on ebay etc as its been out for a while.