Crossword Genius

Importantly, he confuses Amy with Ken (3,3)

Ross

I believe the answer is:

key man

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'importantly he' is the definition.
I know nothing about this answer so I can't tell whether this works.

'confuses amy with ken' is the wordplay.
'confuses' indicates an anagram.
'with' is a charade indicator (letters next to each other).
'amy' after 'ken' is 'kenamy'.
'kenamy' with letters rearranged gives 'KEY MAN'.

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I've seen this clue in the Evening Standard.
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