That's not quite what I meant. I always thought that DX lenses on DX bodies were the same as an FX lens on an FX body. So if I use the 35mm DX lens on my D7000 and printed a shot out and then took a 35mm FX lens on my D800 and printed it out, I would have pretty much the same photo with all the same items in it, right? So in otherwords a 35mm DX lens gives the same FOV as a 35mm lens on an FX body, no?
No you wouldn't.
Since you have the 800 and the 7000, just do the experiment with a 50mm on a tripod from the same distance and compare the shots. You'll have your answer.