I 3-box a cleric, shaman and monk. This is one SoF target that had evaded for a long while, because of the adds. Recently, I was able to figure out a strategy that has worked, and let me take this guy down, so here it is.
Step 1:
Set up between large tower and the small tower.
Step 2:
Single pull the Chamberlain, and be sure your casters are a ways away from the fight.
Step 3: DPS the Chamberlain until his first add spawns. Immediately stop dps'ing the Chamberlain and focus on the add. Kill the first add. (During this part, you're going to be tanking both. If you're afraid of losing aggro on the Chamberlain, switch back to him every little while.)
Step 4: Once the first add is dead, refocus on the Chamberlain, and get the fight stabalized.
Step 5: DPS the Chamberlain until his 2nd add spawns. At this point, you can either kill the second add like you did in step 3, or you can offroot this add; either works.
Step 6a: Once the 2nd add is handled (either killed or offrooted), refocus on the chamberlain and kill him.
Step 6b: Kill the 2nd add if you offrooted it.
Step 7: loot up :) you won.