Same User and Default Schema Name?

I am using ArcGIS 10.2.1, SQL Server 2008 R2, and the dbo schema.

I was reading that ArcGIS SQL Server Enterprise Geodatabase requires the User and Default Schema to be the same name.

Ideally, you shouldn't have the user & default schema w/ the same name because when a user leave the job, the account will be deleted for security reasons, and all of the info for that user will be gone.

Any thoughts on how to deal with what I mention here?