Multi tabling SnG's can get tough. You could be at different blind levels at different tables, and need to constantly switch back and forth between mindsets. So, as long as the overhead of switching mindsets does not affect your game, I guess the answer to the question of reducing variance would be 2 table it.

So it depends on the type of player you are and the way your mind works. I do not mind multitabling on ring games, but can't stand multi tabling SnG's. Especially when you get toward the end stages of the SnG, when decisions are made more and moer frequently because there are less players.