ORIGINAL: Tall Paul
The only full-scales I'm aware of that have inverted profiles at the wing root are the L-1011 and DC-10.
The wings on these have a much larger operating range than a model, and have to be optimized accordingly.
I doubt at model Reynolds numbers such a complex wing would be any better than a more conventional distribution of airfoils.
L-1011 Wing Root...
There are other full-scales having inverted profiles. See wing root of this DC-8.