Is Unique Clearing Account Required for Every Asset Category?

We started with 12 asset categories and setup one clearing account 138002 and one CIP clearing account 138003 (for 30 Corporate Books). 

We are being told that that we need to create 11 more unique clearing accounts and 11 more CIP clearing accounts so that each Asset Category has a unique clearing and CIP clearing account.  Can you tell me what is the advantage of unique clearing accounts per Asset Category?  We have found that once we add assets, we cannot change the GL Accounts in Asset Category so we want to make sure we have a full understanding of the required configuration.