Yeah, sort of a long story. The chain snapped right when I got it out of the package, so while I'm waiting for a replacement I just jammed the two ends under the helmet.
Got mine in yesterday. Given that this is my first Vader I'm going with a clean ESB display.
My only complaint so far is that the chest and belt lights are distractingly bright - I wish they were a bit more diffused. I ended up just turning off the chest box for now and leaving only the belt boxes.