But I don't see a left hand option. I believe about 10% of the population is left handed, so I guess that's why, but it seems it wouldn't be that difficult to design the shell for a left hand and still use the same buttons, leds, and circuit (with some wiring changes.)
Saw this quote somewhere on the Internet: "If the right side of the brain controls the left side of the body and the left side of the brain controls the right side of the body, left-handed people are the only ones in their right mind!"