I agree with Major West on this; the shrunken lamb can vary significantly so its a good idea to contact Wested directly, tell them what you`re looking for. They`re usually really helpful, and may even send you a photo of their current batch.
That said, if I were to go for a Hero I`d seriously consider Wested`s new Goatskin. While its a little too dark to be completely SA, I`d say its closer than the chestnut/ginger colour that the shrunken lamb can be, and in terms of weight, texture and drape its very similar to shrunken lamb. If you go to the previous page of this thread Ive posted a couple of pics of my OTR Raiders in goat. See what you think.