hey,
are you planning on putting it in your main tank?
do you have alot of active feeders? cuz i believe jawfish to be shy feeders.
a decent depth sand bed?
i too have wanted one for a very very long time, but because of the reasons above, i have always passed up on putting them into my display.
that being said, looky looky...

sorry for the blurry pic, it is in my 20, with a ~5" sandbed, and has resided under my GSPs.
i've seen them available occassionally at both JL and King Eds.