Those keycaps, though... *shiver*
Hmm, I like the idea though, especially if you were left-handed, although the left hand tends to already be somewhat overloaded on a standard layout... I actually dislike the semi-mirrored numpad; I think either the entire thing needs to be reversed, number order and all, or the layout needs to be the same as a right-handed numpad. So like, top row would read from left to right - * / NumLock, the next + 9 8 7, the next + 6 5 4, the next Enter 3 2 1, the last Enter . 0.
I can see what they're going for with the right side, but it looks awkward and balky.