Crossword Genius

Popular custom, actually (2,8)

Ross

I believe the answer is:

in practice

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

'popular custom' is the wordplay.
'popular' becomes 'in'.
'custom' becomes 'practice' (I've seen this before).
'in'+'practice'='IN PRACTICE'

(Another definition for in practice that I've seen is " Actually".)

I've seen this clue in The Telegraph.
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