Shifty character is keeping very quiet and cheating (5,8)

I think it could be either:

sharp practice

sharp practise

'cheating' is the definition.
(I've seen this before)

'shifty character is keeping very quiet' is the wordplay.
'shifty' is an anagram indicator.
'keeping' is an insertion indicator.
'very quiet' becomes 'pp'.
'character'+'is'='characteris'
'characteris' is an anagram of 'sharractice'.
'sharractice' going around 'pp' is 'SHARP PRACTICE'.

'and' acts as a link.

(Other definitions for sharp practice that I've seen before include "Ethically dubious machination" , "Dishonest dealings" , "Dishonesty" , "cheating" , "fiddle" .)

I've seen this clue in The Telegraph.

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