I like the HBC pictures, and the one on #34 is ok too. But, when you think about it, how would they have slashed that well with thier arm blades during battles when the blades were curved/slanted backwards towards the elbows? the most convenient slashing motion for blades that attached to the arm would be an outward swing from the forearm. with the blades curved back towards the elbows, i imagine the blades would have stabbed rather the sliced.
So, theoretically, it seems better if the blades on thier arms, at leasts the one that is closest to the wrist, was curved forward, curving/slanting over the wrist/backhand.