She's hybrid to the extent that they put a reinforced flightdeck on her, a quarter-ramp for unloading vehicles and some berthing spaces and C2 spaces. that's about the extent of her military features.
Having been aboard her in Portsmouth back in 2005, it was obvious she was just a standard Incat ferry with some minimal mods to suit role. Other than comms and messing there were no "military" mods. Her skipper at the time was very forthcoming as to the limitations of the ship. Her superstructure mounts (ally cats have an "interesting" structural arrangement) had cracked on the Translant voyage in SS5.