An interesting find indeed. Maybe it was made under the same concept of left-handed scissors or left-handed pens; not really something that is necessary, but something that might appeal to the lefty crowd just for the sake of existing? I'm sure someone more knowledgeable will chime in. In the mean time, have you tried searching the forums for this kind of thing? I would be surprised if this hasn't come up before.

Cheers,
-Jake