Dave R, in hidden line mode, the same thing happens as in a monochrome face style, single click selects an edge or face quickly, double click selects a face and its boundaries, quite promptly triple clicking selects a face but if the edges were already selected, they deselect. In wireframe single clicking and double clicking have a slightly quicker response but single click selects an edge, double click adds two adjacent faces but still no triple click.
My project is now complete and it hasn't been a major problem, but curious since its only in this model.