dh90, not quite the way I understand it. Failure will occur at the same g loading, it's just that assuming you are pulling max g, then any aileron input will increase the loading on the upgoing wing above the max g limit (and reduce it on the other wing) so the upgoing wing may fail. Very simply of course - as has been mentioned there are all sorts of other considerations. The reduced rolling g limit should mean that at that limit (say 4g for normal 6g aircraft), you should be able to apply full aileron without exceeding 6 g on the upgoing wing. However aileron effectiveness, aspect ratio, external stores etc. etc. mean that 2/3 max g can only be a guide.