On 7/12/2005 8:21 AM, wrote the following:

a) I (assume I am legally PIC in the airspace in question) can carry a
CFII as a mere passenger, and

Not just airspace. If you are not IA rated, you cannot act as PIC on an IFR
flight plan. You log PIC because you are rated in the airplane, sole operator
of the controls etc., but the CFII must be acting as PIC and must be current.
Hence the CFII would not be a "mere passenger." It still doesn't have to be
dual, though.

At least that's my understanding. I'll get jumped on pretty fast here if it's
not right!