From the person who said this:
All the best,
Nonoise
Plus, silver oxidizes/tarnishes very quickly where exposed to air and may create contact issues in time.There's this:
Silver and copper are both easily oxidized. The reason that silver and silver alloys are used for electrical contacts is because silver oxide is just as conductive as silver metal. Copper on the other hand has a non-conductive oxide and so it is typically not used for contacts unless there is some pretty heavy wiping occurring, i.e. the surfaces are scraped in the process of making a connection to cut through the oxide layer.Draw your own conclusions.
All the best,
Nonoise