X-tra wood is a film finish to make the wood look like it has a lot of figure when the wood is actually plain. Looks great, wears OK from what I have seen, but it is not high-grade walnut as one might think at first look.
I think it is applied much like the factory camo jobs but looks better at the seams.
To me, personally, it is not a selling point. Sort of like giving the wife a CZ ring. Looks nice, but sooner or later she is going to find out it ain't real....