Thanks for tuning into to Just_Barley_Victories. Here’s some updated information on Hollow Knight Silk Song. There’s a really good chance we’ll see it release sometime in 2020.
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Basically how I understand Silksong's banking system is. If Hollowknight's money system was the Darksouls body run mechanic. That is to say the knight's shade/dead body holds all of it's geo on death and you have to grab your shade to get it back. But if you die twice in a row with out retrieving your shade you will lose a lot of geo, Silksong's money system is Sekiro's system. That is to say all rosaries will be lost upon death unless they are on a rosary string in some or most cases putting rosaries on strings will cost rosaries to do, and you can break these rosaries stings to get the rosaries back. Basically you can turn rosaries into "boss souls" or the relics like the king's idol from the first game in most cases for a price but you can turn them back into rosaries with ease.