Timing is the main issue for me.
I use the one handed as much as I can cause I can react much faster and better coordination
So this is typically ROS
However I have more strength with 2HB
So when I have more time playing from the backcourt I use 2HB.
My sense of timing and tempo is still controlled by my preferred arm my right but I have added rhythm and power from my left arm holding on to the racket
In essence I hold with my left hand and grip with my right hand