I say learn to use both effectively. I personally favor the boxing approach of strong side back but I switch it up a lot to be deceptive. People tend to get extremely confused when you suddenly switch your lead.
Member of DaJoGen MMA school under Dave Hagen and Team Chaos fight team under Denver Mangiyatan and Chris Toquero, ran out of Zanshin Martial Arts in Salem Oregon: http://www.zanshinarts.org/Home.aspx,