RVDT, taking off with control locks ON, hmmm how can that be when the controls are LOCKED? So cannot move the controls or the lock is U/S. The 350's I fly have a collective lock but no cyclic lock, installed by the manufacturer & there is no way of taking off with it on - IMPOSSIBLE to move the lever. I flew OH58 on ag work which had both lever & stick lock for the purpose of exiting machine whilst running. We don't leave the Pilot to usher PAX but have a trained ground crew for that job, so no tail rotor mess??? Simpler & safer than the Pilot leaving the controls & maybe a village idiot hopping in for a play whilst the Pilot is on the other side managing PAX.