Well it would be interesting if an objective test existed. I agree it makes no difference legally now, but if it could be indisputably proven that I was not in control of my body at the time, there is precedent for diminished responsibility ("while the balance of his mind was disturbed").
I wonder, if personality A did all the work, would personality B refuse to spend A's money on moral grounds?
I wonder, if personality A did all the work, would personality B refuse to spend A's money on moral grounds?