This is going to be a kick in the nuts for moderately large realms, Tom.
The refill rate of paraphernalia items would not change much, true, but the "stockpiling effect" would be gone. Demand for paraphernalia comes in spikes, when the army is refitting, and having a stockpile of them to hand out speeds things up.
A siege engine workshop that holds six siege engines can supply six knights immediately. If that workshop can only hold one now, you will have knights waiting for days before they can move out again. One of them has to wait nearly a week.