I can't directly comment on owning one of eD's HT subs, but I can comment on using their drivers in the same capacity for a couple ported DIY subs.
I've built a couple of subs using their 13Ov.2 drivers (box tuned to 25Hz, cylinder tuned to 22Hz) and they both perform very well with music as well as HT. While I expected it to do fairly well, I was pleasantly surprised at it's punch for music at both tuning points.
Depending on if the enclosure is built properly and tuned appropriately for the driver and enclosure, a ported sub should perform just as well for music as it does HT/movies... -TD