Dragonscale is useless and more a pain in the *** than it's worth in the end.
I did dragonscale and ended up dumping it for another tradeskill entirely. My friend has elemental. Some pretty handy / interesting stuff in the set but for the most part the materials needed are a HUGE pain in the *** to gather.
Most people I know that took tribal seem to like it. They can even sell their wares for a decent profit sometimes.