discussion of QNames in content in RDFa documents?

The TAG finding on QNames doesn't come right out
and say "don't use them in attribute values and content"
but it enumerates a bunch of problems when you do...
  http://www.w3.org/2001/tag/doc/qnameids.html

It seems worthwhile for the RDFa specs to say
something along the lines of "yes, we know QNames in
attribute values don't work well with canonicalization
nor CSS selectors, but we think it's worth doing anyway."

i.e. anticipate criticism such as this rather than deal
with it as a last call comment or some such...

"As it is based on the  
(horrid, imo) concept of qnames in content two equivalent (not identical)  
documents can't necessarily be styled using the same binding because the  
Selectors language and the DOM have no support for qnames in content."
 -- http://lists.w3.org/Archives/Public/public-html/2007Sep/0520.html

-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/