It took a while but I'm currently doing nice dps on my full shield/block lvl 36 war (all out on anything that increases damage based on block%). Still avoiding 2h big slam bam style, even though clearing mobs most efficiently I think is very similar: leap and boneshatter.
I've been trying with resonating shield, as I thought it'd be a good alternative to block, as you're actively blocking while breaking armor, but it just doesn't hold up by far. The skill doesn't break armor fast enough (armor breaker trumps it) and it's not mana efficient (I desperately need the mana for leaps).