Application dispatch for application/xml

Greetings,

In preparation for a 3023 revision, I've taken it upon myself to examine
how various agents dispatch applications for documents described with
the application/xml media type.  I'm currently considering the impact of
XML namespaces and xml-stylesheet declarations.  See;

http://www.markbaker.ca/2004/01/XmlDispatchTest/

My intent is to revise this paragraph from section 3 of RFC 3023;

  An XML document labeled as text/xml or application/xml might contain
  namespace declarations, stylesheet-linking processing instructions
  (PIs), schema information, or other declarations that might be used
  to suggest how the document is to be processed.  For example, a
  document might have the XHTML namespace and a reference to a CSS
  stylesheet.  Such a document might be handled by applications that
  would use this information to dispatch the document for appropriate
  processing.

If anybody knows of any browser or agent which dispatches applications
based upon information other than the namespace or stylesheet, I'd
love to hear about it.  Also, if you feel that the tests I've set up
don't properly cover the namespace/stylesheet-dispatch space, or are
otherwise deficient, I'd like to hear that too.  In fact, any and all
feedback is appreciated, including more test results from other
browsers and non-browser agents.

Thanks.

Mark.
-- 
Mark Baker.   Ottawa, Ontario, CANADA.        http://www.markbaker.ca