Why list it at all?
I list my total time, and then my actual COMMAND time. ICUS doesn't get listed on my resume as I see it as irrelevant. You may as well list your dual hours as well.
For the purposes of stating how much command you have, leave ICUS out of it.
ICUS is good for 2 things - getting time on type required to operate as command, and getting trained/checked to line at a new company. That's it. Ohh and you can also log your CIR renewals as ICUS if you want as well.
morno