Another interesting aspect seems to be which rules apply in this airspace. For sake of argument, lets say that it's the US air force that has taken over the skies, does that automatically say that the FAA regulates everything civil?
Point being that if it's not FAR and you don't have an N reg plane, I should think there's no problem. Like many others on this forum, I also fly PAR's on a regular basis and I don't have a special endorsement, it's an IFR procedure like all the others.
Perhaps it's the fact that the controllers are american and that it's their equipment that is the decisive factor in reality...
/LnS