connection-factories-service.xml has folloing mbean to pull messages across nodes

 <mbean code="org.jboss.jms.server.connectionfactory.ConnectionFactory"
      name="jboss.messaging.connectionfactory:service=ClusterPullConnectionFactory"
      xmbean-dd="xmdesc/ConnectionFactory-xmbean.xml">
      <depends optional-attribute-name="ServerPeer">jboss.messaging:service=ServerPeer</depends>
      <depends optional-attribute-name="Connector">jboss.messaging:service=Connector,transport=bisocket</depends>
      <depends>jboss.messaging:service=PostOffice</depends>
      <attribute name="SupportsFailover">false</attribute>
      <attribute name="SupportsLoadBalancing">false</attribute>      
   </mbean>

what benifits i will get by setting SupportsFailover and SupportsLoadBalancing to true.

I am using JBoss 5.1 with JBM 1.4.3