411A, I am with you all the way on this one.
In all my years of flying swept wing jet transport a/c I have NEVER heard anyone advocating use of rudder to correct a departure in ROLL!
OK far enough if you have got FULL aileron in and the a/c is still rolling (past the vertical let's say) you might start using a judicious amount of rudder to assist.
The "experts" can come up with all the data they like but, IMHO, this was an accident induced by incorrect training! What amazes me is that (apparently) nobody spoke up against teaching this method of control operation.