Same!I've dreamed of smooth, cover-free wings since I bought a Defender. Someday I will repaint this truck and put fresh, clean wings on, no tread.
Since I already have plate the smooth do look like a nice option, add to the rigidity while accepting paint (IMO) better than the 5 bar. Diamond plate on the wing tops seems invaluable, I have seen so many panels bend and bow when doing engine bay work, forget about stepping on the sill.
If I had a nice maintenance free ride I would love the look of bare sills but alas, its not my lot.