Plain and honest speaker, unlike Beckham famously? (8,7)

I believe the answer is:

straight shooter

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'speaker unlike beckham famously?' is the definition.
I know nothing about this answer so I can't tell whether this works.

'plain and honest' is the wordplay.
'plain' becomes 'shooter' (I am not sure about this - if you are sure you should believe this answer much more).
'and' is a charade indicator (letters next to each other).
'honest' becomes 'straight' (associated in meaning).
'shooter' put after 'straight' is 'STRAIGHT SHOOTER'.

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I've seen this clue in The Telegraph.

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