Rascal
Your own thoughts are almost right. In forward flight, pressing the left pedal would cause the helicopter to yaw left. It would also cause the helicopter to roll to the left. The rates of yaw and roll will depend on the rate of pedal application and forward speed. The result is ugly and stressful on the airframe.
I doubt a PC based simulator would replicate this adequately.
I hope this helps your understanding.
Tam