[Matt]

On the Flatter Plane Angles, Angled Hinging approaches Horizontal Hinging. Hence your ability to produce Horizontal Hinging with the Feel of 'No Roll.'

On the Steeper Plane Angles, Angled Hinging approaches Vertical Hinging. Hence the necessity for a more pronounced 'Roll' Feel to produce the Horizontal Hinge Action.

By this same line of reasoning, we can show why short-game vertical hinge actions are more often than not unnecessary. As the stroke gets shorter and the plane angle steeper, your angled hinge approaches a vertical hinge - all without the deliberate conscious manipulation (and danger) that comes with it!