Yeah, actually it does. I don't know how big the tank was at my LFS, but they had two Kessil 350's over it and it was about 2/3 of the way down. It definitely could have been placed closer to the light. (hence the blue coloration you spoke of)
Do these things tend to encrust over the rocks or branch out more? I don't really have any room on my rock structure, but I might just glue it to the back glass right up under the MH and see what happens.