I bought mine with the camera thinking the extra battery capacity might be useful but stopped using it because the extra size (height) meant the camera would no longer fit in the camera bags I use. I've never found the *ist-D hard to hold so the extra size wasn't a bonus for me.
I've just returned after two months of traveling around the UK and France on holiday and I no longer have any tolerance for something that adds extra weight to my camera setup, so that is another mark against it. As it was, the battery life with 2100 and 2500 ah NiMh batteries meant that it would have been superfluous anyway. Paul Ewins
