That's a relatively recent change to the interpretation of the rules then, and changes the application of what I wrote before. Under this new version you would need a CFI or MEI (as appropriate), and a CFII, to provide instrument instruction.
However, by my reading of it, a standalone CFII could still be used if the other pilot is already qualified eg a PPL or CPL with IR who needs an instrument proficiency check. Possibly also usable as a standalone rating for simulator work, but I'm not really certain about that.
Last edited by Tinstaafl; 4th Apr 2012 at 04:30.