I was curious. I read the Twilight books in high school, and I wanted to see if Stephenie Meyer did what she set out to do with this book--basically prove that Bella wasn't just a helpless female who relied too much on her "man." Well, she failed. 
 The idea was intriguing enough, but I wish she hadn't gender swapped everyone in the entire book (minus Bella's parents). It was a bit of overkill and made a lot of character reactions see weird and unrealistic. But I maybe could have forgiven all of that if I hadn't read the ending, which completely undoes anything that Meyer was trying to do with the gender swap. 
 For me, Bella as a character doesn't really become a helpless, pitiful female who needs her man to survive until the second book. And the end of this book tells you that that part of the story doesn't happen to Beau. Because for some reason (view spoiler)[Edythe, being a female, doesn't have the same strength that Edward does and thus she can't suck the poison out of Beau without killing him and prevent him from becoming a vampire, like Edward did with Bella. (hide spoiler)] So we never know how Beau would have reacted had Edythe left him like Edward leaves Bella in book two. Instead of proving that Bella is a strong female character, Meyer only gives us a weaker, female vampire lead and a strange main character. 
 I went into this with low expectations and I was still disappointed.