i have used the x2d as a street photograper even using it wide open with the 55mm. it depends what you want ‘from’ the street, i assume.Resistance is futile...
I think the X2D II is a massive step forward for Hasselblad and its users. The improvement on the autofocus alone is worth it already. According to the reviews, you can finally use the X2DII for street photography. The X2DII seems to be finally a serious alternative for those people who where thinking about Fuji medium format formerly, because of the better AF.