@hrynkiw -
@xcfordan - its possible, but I'm not sure about adding it. The author names are taken from the books on the Kindle - and if not available from Calibre. So it handles books that are only on the Kindle or on the Kindle and in Calibre.
There are only 2 ways to get the lastname/firstname order - either I use the Calibre field data (which only exists for books in Calibre so many books might not have values), or I apply an algorithm to generate the lastname/firstname from the author field. I probably wouldn't write this myself, although its likely that I could hook into calibre's existing function.
But then does the Edit window show both author - which exactly matches what you see on the Kindle and is the reason I list it like that - and lastname/firstname, or just one of them...