Hew Jampton,
I have to disagree. Fist I live in Europe and my logbook does have IFR coloums, although I still use my nation, I'm positive that the new JAA also have IFR coloums. Sorry to say this, but you're confusing the concepts. What you don't log is IMC time (think they do in the US but not sure). Anyway IFR is the same as instument time. How would you log instument time if not flying IFR? And the question on the F/O is irelevant - they both log the same kind of hours (be that a Navajo, Islander, Dash8, 737 or 747).
Tor