I go for skill speed whenever I can for both Paladin AND Gunbreaker because it somehow manages to be better than tenacity, plus I get to save my melds for Direct Hit because, again, it somehow manages to be better than tenacity.

My only real problem with Gunbreaker is that I feel we don't have enough Continuation skills. Like give a Continuation skill for every GCD and Gunbreaker is golden. Also, the devs wasted an opportunity to make Rough Divide a Continuation skill for Double Down...