The gist is that it is required. You can't train around it.
By the way.
Meleagertoo #3509 There's no certification need or requirement to have manual trim operable at full deflection above VMO - how could there be?
A rather famous ‘Jet Upset’ comes to mind. The possibly supersonic 727 Mind you, it took the undercarriage to save the day, so I suppose the T tail wouldn't have worked anyway.