The Web Services Addressing 1.0 - WSDL Binding specification mentions the following:
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3.1.2 Other Uses of UsingAddressing Extension Element

The wsaw:UsingAddressing element MAY also be used in other contexts (e.g., as a policy assertion in a policy framework). Its use and that of related elements and attributes including wsaw:Anonymous (see 3.2 Anonymous Element ) and wsaw:Action (see 4.4.1 Explicit Association) in such contexts is semantically equivalent to the use of wsaw:UsingAddressing as a WSDL extension.

Note that the association of wsaw:UsingAddressing to WSDL constructs where the wsaw:UsingAddressing WSDL extension element is not allowed is not meaningful.
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Section 3.1.2 Other Uses of UsingAddressing Extension Element
http://www.w3.org/TR/2006/CR-ws-addr-wsdl-20060529/#id2263339

Should the WS-Policy Working Group request at least a non-normative reference to Web Services Policy 1.5 from the Addressing WSDL Binding specification? Right now, people might not realize that there is a link between the WSDL Binding documentation and Web Services Policy. Should the Addressing WG go beyond what is currently specified or is it considered enough?

Should there be an example of the use of the UsingAddressing element in one of the WS-Policy document (Primer?)?

Is it considered harmful to allow the use of UsingAddressing both as a WSDL extension and as a policy assertion? What is the expectation if those two are used simultaneously?