I'm thinking of sculpting one out of clay...although I know enoug about clay sculpting, I know nothing of casting and such. If I actually get it done, I might pass it on to someone else if they want to deal with it.
The officially licenced one they've just announced is really nice. Just placed my pre-order for it. So at least everyone wanting a more accurate small-scale one gets their wish.
"But the model makers arrived at a good scale. I went over there and talked to Grant when they were starting to build the model, and agreed on their estimation that a model about six feet long was just about right."
So it sounds like the Studio Scale was around 1/32 if I am doing my math right.