Just got the BG-E2 battery grip for my 20D. It is very large. I have a battery grip for my Elan 7 and it is about half the size of the BG-E2. I also had the grip for the DReb and while I think it was larger than the Elan's grip, it wasn't nearly as large as BG-E2. My initial impression is that it is almost too large for me to hold comfortably. I guess the large size is to accomodate the use of AA batteries but I would rather have a smaller grip such as the Elan 7 grip. Anyway. Just want to gripe and give anyone else a heads up on this.