When I entered the academy of the seven I was met with a voidwoken that offered me (Fane) the ability to swear to the God king and join the covenant (become sworn). This gave me 2 attribute points, 2 combat points, 2 talents, and replaced Bless with Curse.

Do non-Fane player characters get this option?
How does it impact the story from that point?
What happens to the bonuses you get from it if you use a swornbreaker later?