Doing some substantial googling, one finds a number of references to the rudder-only method on "my personal thoughts of flight instruction/stall training" type sites...
Whereas all authoritative sources one finds on flight training and instruction standards (from US, Canadian and Australian civil aviation authorities for example) say aileron should be used for roll control up to the stall.
Seems pretty clear what "normal use of the controls" means in the modern world.
