By default, author-year style in BibLaTeX uses the word 'and' before the last author. I would like to retain this for in-text citations, but would like to replace 'and' with an ampersand (&) in the bibliography and in parenthetical citations.
For example, I would like the following:
In-text citation: Smith and John (2013) Parenthetical citation: (Smith & John, 2013) Bibliography: Smith, A.B. & John, C.D. (2013)...
How can I do this? I found another answer that specified how to turn all instances of 'and' to ampersand, but I haven't been able to find out how to change only the bibliography and parenthetical citations to ampersand (not the in-text citations):