There is an awful lot of test pilots in here for a private flying forum.
I am surprised no one has mentioned incipient spin stage yet which, as I was taught , is another description of the wing drop. If I can recall it was defined as the first 180 degrees of uncommanded roll and the recovery required simply centralising controls and then standard UP recovery. When comparing this with the other technique of a bit of opposite rudder to prevent further roll, there was no difference in height loss, it was a lot simpler to do and no chance of flicking it the other way with the rudder as mentioned before.