Qualitatively there's absolutely nothing to complain about because everything fits together: no gap, no wobbling. It can also be not really negative comments (apart from the price, which is really beyond good and evil), compared to all the replicas in which the buttons do, wiggle, or other problems may occur.
the price: as I said, beyond good and evil, but all original BGs are (no matter which camp) located in the region. Still, I'd buy it again!
Why the original? I had a replica of it, in which the connecting screw me is broken earlier times in another body. At that time I was lucky not to scrap the whole body.
the move is absolutely rock solid, despite continuous mounting. However, here it must be mentioned that the D800 with handle is really big :-) my big hands that comes in handy indeed, but the dimensions are thus even slightly higher than the D3. handy is no longer the ;-)
In addition, I use very often the tripod, and then I let the body by Schnellwechseleinrichtung mostly on the tripod on it, if I have the equipment only a few meters Train - tripod over your shoulder and go. Here I must say that I would not trust a noname handle (I do that way also with the D7100 and D15 MD).
*****
and even a small note in the margin: if people are dissatisfied with a review, but you may comment briefly on what does not fit, so the Rezensionist may consider these comments next time ;-)