I ran around today with my new lens on my D300 and am impressed. The first shot is at 28mm all the rest at 300. All hand held natural light, F9, 1/200 - 1/400, ISO 320 - 800. This lens is a very good near macro.
I handled this today on an acquaintence's D700. Very solid feel to lens, more so than 18-200. Also it focuses pretty quick and very silently. I hate to say it made me want to dig in pocket a bit but I am also anxious to try the 24-120 /4