Invalid cid URI syntax in xop:include examples

In the "XML-binary Optimised Packaging" specification at 
http://www.w3.org/TR/xop10/ the syntax of the href attribute on 
xop:include is defined in section 4.1 to use the "cid:" form of URI as 
specified by RFC 2392.  However, in the examples, the href attribute is 
shown with values consisting of "cid:" prefixed to an HTTP URI, which as 
far as I know is not syntactically valid according to RFC 2392.  According 
to this RFC, a cid URL is syntactically equivalent to an RFC822 e-mail 
address, in the general form local-part@domain.

Regards
Jonathan Scott