XML templates and iframe content

With the demise of support for RDF, does or will the XML template builder be 
suitable for generating content in
XUL Iframes ?

Using the listbox example
http://developer.mozilla.org/samples/xultemp/template-guide-ex-xml1.xul
I unsuccessfully tried to use the XUL  iframe element  (rather than XUL 
listbox element)

<iframe datasources="people.xml" ref="*" querytype="xml" 
xmlns:html="blabla" >

    <html:table>
  <template>
    ................
      </template>
    </html:table>

</iframe>

 IFrames are needed for  scrolling and printing  content and the template 
generator seems to provide a much simpler transformation mechanism than XSL