I've sent this text the the above quoted user, but thought for the benefit of all reading the thread, i would post it here.
RE: http://www.dealextreme.com/details.dx/sku.11228
i would have to say it works for me very similarly to the existing review at:
http://www.dealextreme.com/details.dx/sku.11228
Regarding something that is different from the review there, is that on my 400D - the on-grip 'timed/programmed shutter release' seems to cause the camera to take images in continuous mode instead of '1 shot' mode. so for every 'run through' say you want it to capture 1 image every 1 minute and to do that 2 times (resulting in 2 images 2 minutes apart), i found it would capture at 3.5 fps for the duration of the first 1 minute interval and then repeat the process for the number of repetitions specified...resulting in 180+ shutter actuations
anyway, i don't use that feature, maybe it only works well on the 350D...
FEEL:
Good solid grip, hangs on to camera very well (better quality than i was expecting for a non-canon piece), - no motion once you've done up the thumb screw. Good smooth extension of existing grip, your fingers can't really feel where the body finishes and the grip begins (in landscape orientation)
Features dual Li-Ion cartridge+6AA cartridge - gold plated contacts, Shutter, Dial, * and Focal point selection + AV/ EV control + extras
Weight:
This grip does make the camera noticably heavier even without a Li-Ion battery in it (yes, you can run the camera with grip and only 1 lithium battery installed) but with 1 or 2 batteries, the combined weight seems to balance out longer lenses nicely for hand held work.
EXTRAS:
The LCD screen is for reporting information regarding the grips status (if you're running a program of repeating shots for example) or otherwise displays the current day, time and date (as such, it has a calendar built in).
There is a sturdy wrist strap attachment underdeath that is inset, but the camera won't sit flat (on the bottom of the grip) if you have a strap connected there.
any further questions can be answered here by request.