This TruthValue 'inUse' reports whether the preferred version holder is actually the one currently active, i.e. whether operational and preferred match. A value of false here is an operational signal worth investigating: it means the cluster has failed over away from its designated primary fabric interconnect and is running on the secondary, even if everything otherwise looks healthy. After fabric interconnect A fails and B takes over, B's PreferedVersionHolder record (if A was preferred) would report inUse as `false` until A is restored and control fails back.