I think this is a right mix-up. An IMC Rated pilot with a NQ can fly IFR day or night, in Class D-G, and many do and have been since the IMCR was invented. If you think otherwise, please supply the exact ANO references.
OK, possibly my missunderstanding of the writer's question. I assumed the specific reference to an ADF for night ops inferred VMC at night within CAS, else the ADF would be required day or night. Hence the assumption that an IMC rating was not in the mix. Hence my opening caveat
