I have a leadrope with a chain that I use every time I use the halter, but not over his nose. I use it like a normal lead rope. If he acts up it's easier to either snap it (with just the noise it makes my guy knows that I mean enough is enough) or if necessary it's very quick to slip over his nose.
I honestly prefer the chain because I know that my horse knows what it is and respects it, I never have to use it as a tool against him, only as a reminder that I am in control. Good luck and let us know how it goes!