Great, thanks for putting in the effort. I'm happy to see that the majority of users prefer the voices we currently use, but a significant portion of users still likes the Fargus ones, so it indeed seems the right choice to make it easy for people to switch. I've not made it available yet, been kinda busy myself, but it's still on my list.
EDIT:
Find the original speeches here: https://keeperklan.com/downloads.php?do=file&id=144