[Fortuna]: Luck depends on no one....right? (4/3)

Strictly speaking, nothing explicitly says Cleo *has* to take command over the host body, instead of sharing it, for mutual benefits from both what the other knows and can do. Now if it turns out that Cleo HAS to take full command all the time of a host, then yes, it is perfectly understandable the crew would be... Reluctant, at best.