I think black titanium hardware would look good. It looks like the feathers were cast pointed in both directions. Is that correct? If so, I suspect either end for the nib would look about the same as the other way around.
I generally go with gold for almost everything. But, this time, I'll agree that black Ti is the choice. And, yes, the feathers seem to go both ways. Don't sweat direction. Interesting blank. Be sure to post a pic of finished pen.