Sounds like a cool idea, and I bet he had fun making it, but it's not anything i'd ever use, 4 bills is a lot of points to be useing for a tank. Of course i just now finally broke down and bought a Talos, I just dont' think Heavy support should play a major role in a Dark Eldar army.
btw, on his website there is a GREAT FAQ about any rules questions for Dark Eldar, w/ interpritations from the Roolzboyz, US GW, and Jervis.