I'm also thinking of getting this lens for my D700.
Looking at reviews etc seems like it's in a similar vein to the rest of the "new" AF-S lenses. I already have the 50mm 1.8 AF-S, the 35mm f1.8 AF-S, and they are excellent optically.
The downside (If you think it is a downside) is that they are plastic, and feel almost flimsy.
Having said that, I don't chuck my lenses around, so plastic = lightweight, so it can be a good thing.
As Graham said, the 24mm f1.4 is one to lust after, but it is a much bigger price tag !