My raid leader has been broaching the topic about this profession repeatedly with me.
I'm currently Alchemy/Enchanting, so I'm not scrubbing it up with a gathering profession, but I am curious.
Logically, I can understand how popping SS with AW/Zeal/GoAK would work out to being better than the standard 80 stats.
TL;DR: does anyone happen to know roughly how much more dps Engineering is than Enchanting or Alchemy?