>The D2 series and D1 had them. Of the top line dx cameras >only the D300 did not have one. >Stan
Perhaps that was one point of differentiation Nikon wanted to make between DX & FX. That way they could sell at a more competitive price point, but still sell grips for those that want them. Not unlike the 70-200mm f4 lens without a collar, but you can buy one if you need/want one.