I'm impressed by how LightTable works with iPython to provide a good environment for data analysis, but I'm keeping my fingers crossed and wishing that the stars will align to see LT be the go-to environment for Julia. They are both early projects, and seem to be a fantastic complement to one another. Julia also is able to talk to the iPython notebook backend, so I don't think this would be so difficult. I only wish I had the time and expertise to do it myself.