If there is one AS member on here that HONESTLY uses both hands AT ALL TIMES while aloft, I will buy you a case of beer, your choice, and fedex it to you, on ice, in a brand new igloo cooler.
I'm not gonna lie, I wield the 200 one-handed all the time, when the situation calls for it.
I got bit too, left index finger, while piecing out a large white birch up in the bucket. Limb in the left hand, saw in the right. After the cut, the limb pulled my left hand into the tip of the bar as the saw was decellerating (the limb was heavier than I thought...) and I cut myself good. I can still count to ten, though.