Diego Rossi has a good point that you don’t need to retrieve the scroll case to take out the scroll. You don’t have to retrieve your pouch off your belt before taking something out of it, so why would a scroll case be any different? The only downside of doing this is that it may expose the scroll case to being taken. A scroll case stored on a belt would be subject to being stolen. Storing it in a backpack makes it extremely difficult for a pick pocket to swipe the scroll case.
Instead of storing the scrolls in your belt pick up a bandolier or two. Each one allows you to store up to 8 small items. If you have two bandoliers, that is 16 scrolls or other items.
you technically don't even need 16 scrolls as one scroll can have as many spells scribed on it as you care to spend. it just mean the scroll is longer.
@Name Violation - i offered it way back at the start of this thread.