I've got honored with thorium and have access to black dragonscale boots (dragonscale spec), lava belt (non-specialised pattern). Both of these are epics. The guy also sells chromatic gloves at revered rep, but i don't think i'll ever get that far..can't afford 2400 dark iron ore :)
He may also sell recipes for tribal and elemental (didn't take much notice tbh) - to check the full list his name is lutharos darkbringer i think, and his details can be found on this site.
If you are a tribal LW grind timbermaw rep instead, those furry guys have a few decent tribal patterns up for grabs and the rep is a little easier (certainly cheaper) to grind.