Ditching switch? News reports stating that NTSB reports crew did not use it "not enough time". Anyone want to continue proclaiming the positive attributes of the ditching switch and the impact it had on this event?
Left swing on landing might indicate, for whatever reason, that the left side took a slightly higher load on touchdown then the right engine. That could be the difference as to why one engine stayed attached and one different.
As always, we'll need to wait for the investigation to be finished to understand what actions taken were correct, and if any incorrect actions were taken.