If you are not rated on an aircraft, and there is an instructor in the aircraft with you, he is P1, and your are PUT.
The other options you suggest don't apply. SPIC is specific to integrated training courses, and you haven't done an integrated course. The only reason given for logging PICUS in a single-pilot aircraft is for a successful skills test, so that one doesn't count either if it wasn't a test.
From a JAR point of view, an aircraft only ever has one commander, and that will nearly always be the instructor/examiner if he is on board, and you if he is not.
Your instrument time will all count as Dual (PUT) too, if the instructor was on board, assuming that he was captain of the flight. As well as logging it as PUT, you should also have a column in your logbook for recording instrument time, so make sure you count the time in this column too.
Not sure about the paperwork for your IR. I assume by "IR conversion" you mean converting it to JAR? In that case, your best bet is probably to speak to your IR instructor or examiner in January.
FFF
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