I got my sparky (It isn't call this anymore, but is appears to be the same thing, see: http://equipped.org/pp/pic690.htm)

I really like it! While I realize there is a hand hand disadvantage to it, after the spark lite difficulty I recently encountered, that disadvantage is something I'm willing to risk. After all, generally this would be a last resort device.

I look forward to giving them to my father and brother!

Anyone else carry these?