Should I use Edwin?

Hey ppl,

So I'm currently running a mixed alignment party for my first run of hopefully three, others being evil then good. My party setup is as follows:

Pc- Elf Sorcerer CN
Dorn
Viconia
Imoen- backstabbing
Neera
Coran- because he is a medieval machine gun....

That said, I have NEVER used Edwin and was wondering if he's worth using on my first run. He seems hilarious and such a dick but also massively powerful. Whilst i figure he can't identify, it's no massive prob as I can do this at temples etc. So in your opinion do I take Edwin or Neera. Bear in mind I'm using a mixed party and never used either.....

Thanks. Sorry for the shit typing, train and phone = bad grammar for me :P