ok.... but much of the advantages of "that" contour could've been achieved by "tenting"...
I'll grant you that it certainly looks very cool.. as an aesthetics piece, it's wonderful..
but.. I don't see the advantage to convex itself, because the human hand does not have much of a convex shape when our fingers are spread as wide as they are..
If the buttons were much smaller and closer together, that would make sense..
but the spacing of the keys as they are, our palm is spread and virtually flat.