So much wrong with him. I've progressed far enough into Act 2 to where he's no longer needed, yet there he remains in camp. I must check if I can send him on his way, don't want camp followers - we could become deadly mindflayers just like that! (Remember Nettie?)
He has had good dialogue up to this point but it's well known he degenerates into some sex-pest. I suppose that's believable in some way, however unwelcome. And like I say, no room for spare wheels. Jaheira, as a Harper with Baldur's Gate contacts actually has value.
I must check, but I think if I keep Lae'zel in the party, Halsin get abducted later on. A fall back option to dismissing him if the game doesn't allow it.