Many people would have no issue seeing both Joint Support Ships crewed primarily by a government civilian mariner workforce. The caveat would be retaining key Royal Canadian Navy personnel onboard, including the Commanding Officer, Naval Technical Officer, Naval Technical Chief, Deck Officer, communicators, and a selection of other trades and ranks because these are valuable training bunks.
The Commanding Officer would be the most important position to retain in uniform. Keeping military command of the ship would ensure operational decisions remain driven by mission requirements rather than commercial considerations which has been a issue in the past. It would also prevent situations where a civilian master or contractor management might choose to curtail or suspend operations for reasons that conflict with operational requirements.
A hybrid crewing model could certainly help address ongoing personnel shortages within the RCN by allowing government civilian mariners to handle much of the navigation, engineering, and ship support functions, while military personnel focus on command, force protection, replenishment operations, aviation support, communications, and integration with naval task groups. You would need iron clad arrangements in place to spell out exactly what is expected and what would happen in time of conflict.
Unlike the arrangement aboard MV Asterix, military command authority would remain firmly embedded within the ship's chain of command. This would ensure operational decisions are made by naval leadership and not influenced by commercial or contractual considerations. Given the personnel challenges facing the RCN, such a model could provide a practical way to keep the Joint Support Ships fully crewed while preserving operational flexibility and mission readiness.