Order placed a couple of hours ago.

Let's get out the predict-o-matic. If TTVJ says these sound like a baby PS-1000, then it's probably safe to assume they use the GS-1000/PS-1000 driver and large earcups.
Keeping with the HF-1, I might suppose the HF-2 also has a plastic outer cup with mahogany on the inside.
Just speculation, but it makes sense to me.
Also, we might as well start the fight over the ethics of selling a HF-2 on eBay or Audiogon to people who aren't Head-Fi members, reselling for more than the MSRP, and how much the stock cable "sucks."