I just got an email from Val Kleitz from Bikesmith in Seattle. He is starting to build 2 speed FG hubs again dur to demand. Here is the email.
"Chris: Finally, a note to let you know that I hve begun producing 2 speed fixed hubs again. They will be $200.00, and will come with instructions and all necessary hardware to attach to the shifter of your choice. Let me know what you think. Val Kletiz"
You can drop him an email for more info email@example.com
Thought I would share.