That looks much better and cleaner. I wish I had a swivel on mine. It definitely got in the way when I was adding the sand today.
Yeah one of the major considerations I had for my 150DD was to be able to freely move my lights around:

I made a thread a while ago documenting how I built mine with an LCD swing-arm and VESA mount extensions (same ones I think cakemanPA mentions):
http://www.reefcentral.com/forums/showthread.php?t=2120959
The DD tanks make bracket mounting a bit troublesome because of the extra depth front to back so I decided to build something that could span the gap and still be moveable.