I can twirl a stick forward and reverse quite smoothly and quickly (for having picked it up this week) with my right hand, and kind of choppily forward with my left hand. I can't do reverse with my left hand yet. My next milestone will probably be a smooth reverse-right to forward-left transition, which I can clumsily do now. Then, once my reverse-left is reasonable, forward-right to reverse-left.
Then: TWO STICKS AT ONCE.
I guess I will have to find another stick.