I started with a Kindle and had all of the authors set to LN, FN. When I got the Kobo I saw what a mess that made so I used the Quality Check plugin to fix them to be FN LN. I'm pretty sure I didn't add any Metadata Plugboard (I don't think I've ever added one).
In the Configure this device window (under the Device button) I have Read metadata from files on device checked as well as Use sub-folders) and my save template in the bottom box is
Code:
books/{author_sort}/{title} - {authors}
For its last tab I have Update metadata on device checked as well as Update metadata on Book Details pages. And Attempt to support newer firmware.
I'm using the regular Kobo Touch driver. Way back when I tried the other one I think I was having a problem with books that didn't have a cover, it seemed to mess up the rest of the book's margins, or something.