JNB, you are in the ballpark generally, but mistaken that torque only affects roll during power changes. Torque effect is offset by rig ... for each power setting, there can be a corresponding "no roll" airspeed (tho sadly my plane rolls a bit to the right at nearly all normal speeds). If your airplane is rigged "right", then it will exhibit little to no roll at standard power/cruise speed pairings. The best way to see this is to accelerate near Vne and pull up to the vertical. Initially, very little aileron will be required to offset the rolling tendency. As the aircraft slows, progressively more right aileron (left with a russian motor) will be required. As the aircraft nears zero airspeed, the ailerons will not have sufficient effectiveness to prevent roll and, even with full right aileron, a left roll will commence. If the aircraft was otherwise balanced, it will torque roll to the left until it pivots in the tailslide. Flown the other way, airshow guys will begin rolling left in the vertical and the left rolls will continue in the tailslide.