Lol. Boxed and everything mate.
As for VR... Having used Tamron's VC, Sigma's OS and Fuji's OIS i think that Nikon's VR is well below par. With the others the image in the VF would pretty much freeze. With the VR it made no difference. Having said that i never did any tests with VR regarding slow shutter speeds so maybe I'm speaking out of turn.
I've used Meike stuff before. I had their grip for my X-T1 and it failed after a few weeks so sent it back. It felt well built though. Lol.
So is the Nikon grip the same kind of grip as the actual D750 grip?