Yeah I had one. Very shy fish, very hard to get them eating. I had mine for about 3 months. Saw it like 8 times, saw it eat a single mysis once. Very cool fish though. I wouldnt recommend it for a big tank though since you will probably never see it.
If you can find one that eats, grab it ASAP! If I ever see one in a LFS again I might try again, but I have to see it eat first.