Emerson likes ATS-34 and 154cvm. I don't think he would be willing to change steel for one knife in the line. He is still getting the production side up and running and it would not be cost effective right now to start using a lot of different metals. I would bet that if enough support is shown, he will probably offer different metals down the road. If cobalt, Talonite, and Stellite prove out, my guess is he would go with one of them.
Rumor has it that the original satin finish will brought back. No idea when this would happen or if there is any truth behind it. I guess a phone call to the company would be in order for an answer.