[Yoda]

With my irons i feel a definate "roll" to produce a horizontal hinge action.

With the driver i feel like my hands are just hanging on... does this mean that i'm likely angle hinging if i don't "feel the roll"?

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.