If I could do it temporarily then yes. Maybe a day, or longer if I could choose exactly when I wanted to turn back. I've always wondered what being a girl would be like. That said, I believe in reincarnation and simply for curiosity, I'd like to come back as a girl...
But yeah, if I could choose how long, then yes I would. Probably not permanantly though. Although if I could switch back and forth at will then it's a definite yes...
EDIT: One question about the article though. It doesn't mention the changing of your penis/vagina. Wouldn't you still need surgery even if you used the gene treatment?