Thanks guys,
I was thinking of doing this where I am using stubby wings on my design. And concerned about the chance of the tip stalling before the root when doing a landing approach. The plane I am working on is not being designed as an aerobatic model, what I am trying to do is make a STOL type of design. Flying inverted is not high on the list of design concerns, but loss of lift on the wing tip would be a real issue with the stubby wings I am using.