Crusader stacks - as many weapons as you can get to proc will be the number of buffs you get. I used to get three going on my 29 Warrior by switching to a 2H whenever I had a double proc.
Personally I would go double Crusader, really it's one of the main reasons to even dual wield! Both weapons are suited to proc-enchants, the only advice I would give is to get more Hit than you know what to do with. White attacks suffer an additional 19% miss rate over the 5% base when dual wielding, so you're looking at 24% chance to miss auto attacks. Not that there's a lot of itemization to help, but anything you can do to cut away at that will net you more Flurry Axe and Crusader procs for sure. I guess what I'm saying is go Horde for Rune of the Guard Captain lol.
I threw this
dual wield profile together as a reference for gear and talents.