Once an ATPL has been issued, at the end of the day, ICUS is just another term for co-pilot time.
When going for a job, no employer will consider ICUS time as command time.
Folks,
Here we go again, that peculiarly anal Australian approach to logging flight time "The Australian Way", instead of per. ICAO Annex 1.
Command is command.
ICUS is ICUS, it is not co-pilot. ICUS is not command time, it is ICUS.
Co-pilot is co-pilot.
Sensible potential employers are very interested in ICUS (by whatever name) time, because it is a measure of a pilot's time as "pilot flying", as opposed to co-pilot duties.
Many young Australian pilots miss out to other candidate, in the big wide world outside Australia, because their log books do not reflect their actual flying experience.
Tootle pip!!