Ed Wenger polished the pan on my Chambers lock. I find it work well spent and very helpful. Here in the South, humidity will render a pan a sticky mess. The residue after firing can stick like hardened grits. That grunge will also collect moisture and prevent a flash if the pan is not cleaned first.
I always wipe my frizzen, flint edge and pan between shots when feasible. If I do that, the Chambers does its part. Boom!
The polished pan does two things for me:
1) It makes wiping out the grunge much easier.
2) It allows me to easily see where grunge is remaing, or where a spot of corrosion might be trying to start. This is harder to see on a matte finished, blued pan.
Just my experience, but that is why I like a polished pan. Gold overlay might be even better but I haven’t had the chance to try one. God Bless, Marc