Chris,
I guess we only disagree on how effective any roll-yaw decoupling is. You flew the airplane for 14 years, and suggest it doesn't work quite "as advertised". Thanks for the datum.
I imagine the engineers who designed the airplane knew that there would regularly be displacement to a new baseline datum in bank, not only because mother nature does not follow engineering models to the letter, but also because one wants to consider stress allevation on the airframe and "go with the flow" quite often.
However, the official recommended technique on landing in gusty conditions, as I understand it, is still not to wiggle the stick around to compensate but to use steady, deliberate motion as necessary.
PBL