They sure are awesome, have no clue where to get them though! I saw them on planetinverts a couple weeks back when I was looking for info on sulawesi snails and shrimp.
If you find out a place to get them, shoot me a pm! They remind me of whiptail scorpians but my mom won't let me have those, so I'd settle for something to go in a tank because it couldn't crawl out and scare the bejeebies out of her.