Can a single Management User be used for all host controllers connected to the same domain?

Issue

• I've read the KCS article, however I need clarification. Should I create single Management User for all host controllers and set it on slaves in:

<domain-controller>
  <remote security-realm="ManagementRealm" username="slave-user">

or should I create separate users for each host-controller and name them with hostnames:

<host xmlns="urn:jboss:domain:1.6" name="HOST_NAME">
  <management>
    <security-realms>
      <security-realm name="ManagementRealm"> 

• Which approach is considered as "standard" by Red Hat support ?