[GraemeJ]

Broadly, I'm with sciurius on this.  I find it much quicker to make pencil and paper notes and then transfer the relevat points onto the tablet at home.  I agree with you that doing it direct can speed up the process - but that's speeding it up for you, not the other players, who are waiting for you to complete your adjustments.

Agreed, it does take a you little more time, but it also means there are no delays during rehearsal and you have the time to decide what is relevant from the notes and the best way to display those points.