Patent it!!!!!
Think about it... The handle is in the centre of the cutting blade out of the way, so it'll not knock your veg as you hoe back and forth.
Yet with a normal hoe and swoe, you do have the curve in the handle from where it come away from the blade, but I find it's still not enough, that little 'arm' near the base I find always catches the younger / shorter plants before they grow up out of the way.