It is in Scott's handbook. Interesting little fish. I wanted one of these for a long time but could never get my hands on one. Let us know how it goes if you get it.
I've had one and although they are cool fish, they only come out during feeding and are easily harassed by even the nicest tankmates. They bury in rock holes and in the substrate. You will hardly ever seen it.
I have had other worm Gobbies and they can be hard to feed and they jump every chance they get. Cover the tank well and only keep with mild tankmates - it also seems to help if they are kept in small groups.