VoCS with HA and Seraphim makes for some pretty goddamn big-dick DPS as well - and honestly don't be too upset about using a Str trinket - Str is a much, much better stat for us than people seem to realize.
Edit: @Donatist - I'm pretty sure Slootbag does Sorka on Iron Maidens, so you should be able to find a VoD or something from his stream of that. Honestly though I feel like having a prot paladin do Sorka at any other point than in the last phase is a waste - the way we did it was have our monk tank Sorka until 20% because he could just roll in and out before Blade Dash so we didn't lose any cleave uptime - and then at 20% we'd swap on Marak and Sorka to cheese Sanguine Strikes and I'd bugger off with Sorka to a corner until Marak died.