Aqer,
1. it doesn't make much difference whether the answer is 4,4 or 8 to this discussion does it.
2.Chambers crossword dictionary gives as an example of a homophone type clue...
It's cold in a S. American country reportedly (6). answer Chilly.
S American country (chile) sounds like chilly, like identical caps ( beret beret) sounds like beriberi.
I can't say it's my all time favourite clue but it seems reasonable enough.