Looking at the rib drawings, Tom is building the wing upside down using a conventional cambered wing section at root and tip and probably with the rib center lines a constant distance from the bench. Hard to tell without measuring but it may be slightly thicker percentage wise at the tip - another trick sometimes used to prevent "tip stalling" The two "egg crate" spars are also drawn upside down. Judging by the join angle of the spars, this wing will have anhedral.
Sooooo...
Looks like an anhedral wing with a semi-symmmetrical, (bi-convex) airfoil. Is that right?
Yes.
Ray