I'm wondering if Farnese's visit to the noble party played a more important part than Farnese's own soul searching. When the nobles were being attacked by the pishachas, Farnese lunged for the silver lantern than for any conventional weapon. I'm wondering if this could have triggered some thought process in the nobles where they start experimenting with silver to combat astral creatures. Silver is an expensive commodity in the Berserk world and only the nobles have the means to acquire it, but short of obtaining elemental weapons or enchanting a weapon by slaying apostles, it seems to be the only method for non-magic users to fight astral creatures. Perhaps Lord Vandimion will become an obstacle in Griffith's plan to become king if Vandimion becomes recognized as the generous noble funding an elite regiment equipped with silver to deal with Ganishka's familiars.