Damn I wish my vanguard ira supported it today before it's too late.
The point of the OP is that you CAN do it today. You do not need to wait for Vanguard, Fidelity, or anyone else to support it. It just takes a modest effort and expense to set it up.
I agree. I don't think Vanguard will ever support this, not really in their mantra. Fidelity did support buying the BIT for a little while but then decided against it. Very few firms around the country, including the bigger boys like Morgan Stanley, Merrill Lynch, etc, will take the risk of holding alternative securities in an IRA. Like jz says, you can do it today, it just takes some legwork!