HI,
I was wrong. The settings with article= etc only control the appearance in the reference list.
The FormatCitaiton = true and further control the appearance of the in-text citations.
I did a debug sesion and found out that author + year are internally combined to one String (or “word”) which is then inserted into Open/Libre Office and then formatted with the given thing.
I also experimented a bit with LIbreOffice, e.g. trying do define my own character style, but this is based on the same problem as above.
So, I currently see no possibility to do this. Codewise this would require a huge effort and is in my opinion not worth it.
However, we plan the suport of the CSL citation styles in Open/LibreOffice, so that would enable you to do this.