Titan,
Agreed and only on the grounds that it is covered by the operators GOM with provision for exactly how it is to be conducted in the FOM or like. Reference can always be made to the FAR Part 91 ops that provide for the FO to log P1 when flying pilot (in the right seat). However to my knowledge the regs as I read them now don't provide for every Tom, Dick and Harry to log icus on every flight that he is a crew member. And I'd have a few dollars on it that most FOI's would agree. Reckon it won't be long though before the 'command practice' procedure becomes a lot more common place once we see some guidelines introduced into the CASA documents.
Regards
D