Hello,
I have a question about a feature that a features list indicated was possible. THey indicate that an "on board hard-disk recorder" is available to be attached to the accessory braket.
Has any one had any experience with this device and does it really allow you to drop the real-time video to hard-drive on the camera? Am I miss understanding the function of this accessrory?

check these out
http://www.focusinfo.com/products/firestore/firestore.htm

See also http://www.dvinfo.net/canon/articles/article88.php. Article was written for the XL1S, but also applies to XL2.