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Personaly Id opt for heleox bailout all the way.
It's an option, but it's make often many gases and gas tanks to carry and long deco obligation. For 20 min 90 m hx 10 PpO2 1.3, OC bailout with hx 16, hx 40 and O2 make something like 150 min rt with VPM-B and 180 min with VPM-B.
I prefer the hypotectic risk of ICD.
Cause I don't belive ICD is a risk (in that case), but I'm sure than carrying tanks and tanks make all my dive less pleasant.