So me and a couple guildies decided to go do heroics, wound up getting SFK. Got over to Springvale relatively easily, with only a couple wipes from not everyone knowing what was going on. As almost everyone has been saying, the dude is hard if you don't have a group capable of properly interrupting the adds.
So there are two main strategies I've developed that make the fight cake, depending on your comp.
1) Double Interrupts: You'll usually have at least one person that can interrupt every empowering from one add; however Springvale is still gonna get charges. When you have two interrupts, they tend to get confused on which is theirs to deal with, and you essentially only have one interrupt again. Notice that the adds are noticeably different from one another. Blizzard did this on purpose. Assign the interrupts to either the gold or silver add, so there will never be any confusion if they miss which add came through which door.
2) Pally Tank: The very easiest way to do this fight. Tank doesn't even need to be exceptionally geared, so even having a pally switch specs for this fight is advised. The reason this works is because of how ridiculously powerful Shield of the Righteous is right now, getting random procs. More than likely you will never get his shield blast unless you get an unlucky streak of no procs (at which point horde pallies should use their racials since both are equally effective in this scenario). My group downed him first try once I switched over to tanking on my pally, and even got the achievement.