If the money pouch can protect the money from being lost after death, then why not runes can be protected too? It would be a bit easier if we have some carrier for it, besides, it's taking space on the inventory wherever players go.
CrystalOceansaid: Well, maybe a "Rune Case" on the toolbelt to carry a number of runes deposited from the inventory or bank? Also for the sake of fair game, they can be at risk of loss in death even at the wilderness.
Just saying, but this game isnt meant to be 100% safe, there are meant to be item/money sinks for a reason.