I really can't see the point in this Metabones adapter you will loose AF and probably some IQ because Nikon lenses are not intended to be linked up to a Fuji system. I can see the attraction of an XT20 as a travel camera for its lightness but once you start putting huge Nikon glass on the front of it you will negate the very thing you bought the XT20 for and it will just become another heavy camera.
YES YES YES Philip ... But as I have been seduced into 4K video with the XT20 I wanted to try out what it can do with serious glass on the front, but don't want to buy further into the Fuji system. In fact the loss of intel is making the experiment a bit tedious ...