I've seen a couple designs with "wingerons." That's not what they called it and I can't remember the term, but papermache got it right. I think the wing pivots closer to the CG though.

It's a much more efficient configuration than ailerons, but it is also fraught with potential for disaster. Obviously any slop will be bad and it will require hefty servos. I can only imagine what the potential for flutter is. There's a reason why you don't see planes with this feature very often.