I'm using the 14-24, but on a D800, not with the adapter.
Great lens, low distortion, CA is manageable.
FWIW, I usually have it smacked over to the 14mm end all the time.
BUT, worth considering as an alternative, is the Samyang 14mm prime. It does have a lot more distortion than the nikon zoom, but if you're shooting landscape you can usually work around that by keeping any straight lines running near the centerlines of the image. It's sharper and less CA than the nikon zoom in the corners too. and 1/3 the price, or less.
I'm going to be evaluating whether or not I keep the zoom or just use a 14mm and 20mm prime instead.
Tough choice, that zoom sure is nice to use, even w-o any easy ND filter options.