I also assume that granting a rune without wielding it is kinda improper. However, there is a workaround - make it living! For example, every time the belt gives a rune, his morale drops by 10-20% or so. This way, even if it isn't equipped, it will go out of control and will not give runes until suppressed. This way it can be both a boon and a curse. Right now it's simply something to buy as soon as possible and cherish
