Airbus factory is not too long from my house and I have visited it 3 times. Bombardier and CAE are very close together at Montreal. I was studying the CRJ type rate there. If you have the chance try a visit. It is really amazing. If I were canadian I would be proud of bombardier
I don't remember exactly the conditions needed, but the CRJ doesn't retard the throtle to idle... it throws back the lever like a canion. Therefore CRJ pilots are encouraged to put the whole hand over the levers at TO not leaving the thumb at the back of them. As sonn as a reverse is deployed during the TO the corresponding lever goes back to idle, mechanicaly. I guess conditions are >80knt <1500' and power>60%