I found two reasons why I needed a grib.
1 - I tend to do more vertical shots, and its easier if you have the grip. (15%)
2 - Extended Battery life. (85%)
With #2 - 16GB CF cards and 2 - 8GB CF cards I tend to shot a lot, specially at sporting events (soccer, 90+ minutes of game time). Without a grip I would end up holding back to make sure I get to the end of the game.


