No; they are NOT exclusive - the IMBE uses the domain when building the beanKey - see the test case...

	<jmx:mbean-export id="integrationMbeanExporter" server="mbs" default-domain="test.MBeanRegistration"
		naming-strategy="namer" />

    assertTrue(names.contains(new ObjectName("test.MBeanRegistration:type=...

The default domain appears in the `ObjectName`.

See `IMBE.getChannelBeanKey()` etc.