Hyperemesis is a tough one for sure. I'm sure you are quoting evidence based practices. I am always cautious when promoting benzo's as treatment. I know you speak of it being administered in an inpatient setting, but the reality of people self administering is something to be cautious about.
I wouldn't want a young keen and obviously passionate doctor who is only just embarking on his career, to be held liable for someones interpretation of your treatment advice.