Thanks very much djpil - that website has some excellent diagrams. Yes, it seems that the stall strip on the Warrior would ensure that the stall progresses steadily from root to tip instead of jumping root --> tip --> midspan. I might use those diagrams in future.
Many pilots over-simplify stall strips by stating that they cause the wing root to stall before the tip. However, a more correct explanation: "They are designed to modify the stall characteristics of an airplane by inducing a stall at a controlled location along the wing.” (NTSB Safety Recommendation A-97-41 through -45) leads to questions that aerodynamicists are best equipped to answer!
Seems a shame that the aircraft manufacturers are unwilling to assist flight instructors with actual data for their aeroplanes...
Thanks again,
Oktas8