To give a little background, what we are trying to achieve is create a portlet using icefaces 2.0(portletfaces bridge 2.0), deploy the same in Liferay 6 portal server. And achieve Interportlet communication using publish-supported-publishing-event and supported-processing-event elements(which is supported by the bridge only if the view is completely in JSF, and works like a charm).

Raised the issue with portletfaces. Pl find here what Neil Griffin has to say:
http://www.portletfaces.org/community/forums/-/message_boards/message/56588

Problem Description more in context of icefaces:

To give a brief idea on my view:
a.xhtml - i require icefaces components
a.xhtml includes b.xhtml using ui:include
in b.xhtml again i require some of ice components but this is something i'm willing to change to all JSF components.
b.xhtml contains <icecore:config render="false"/>

When i do not include b.xhtml, then all is well, a.xhtml renders.

But fails the moment a.xhtml is incuded because it does not find a renderer for icefaces components.

Obtained error is:
14:41:34,200 SEVERE [DOMContext] ICEfaces rendering required by icefaces-compat.jar components. Enable via <icecore:config render="true" />.
14:41:34,200 SEVERE [application] Error Rendering View[/xhtml/patientsearch/patientSearch.xhtml]
java.lang.UnsupportedOperationException: ICEfaces rendering required.
        at com.icesoft.faces.context.DOMContext.getDOMContext(DOMContext.java:235)