Actually, homebuilt light airplanes and gliders have been built for some time with aluminum skins bonded to aluminum ribs. About 10 years ago, I attended the homebuilt glider get-together and saw a demonstration of skinning an aluminum wing.
Trouble is, once together, always together. Pretty hard to replace a panel once it is bonded in place.
Yeah, I know the post was tongue in cheek.
John W. Irwin
2005 Classic 28 "Sabre-Dog III"
2013 Silverado 2500HD Duramax/Allison LTZ
WBCCI #9632, TAC TX-10