No Visible Injury is a perk that requires Unkillable and allows someone to take HP loss without showing it.
Enhancing it with Switchable would make someone more versatile if they wanted the option.
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GURPS Wiki
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No Visible Injury is a perk that requires Unkillable and allows someone to take HP loss without showing it.
Enhancing it with Switchable would make someone more versatile if they wanted the option.