phranque - 6:35 am on Aug 15, 2012 (gmt 0)
google "should" take your "preference/suggestion" in the link rel canonical element and index that in place of the crawled element.
if you specify a meta robots noindex i assume google will ignore the entire document, including the link rel canonical element.
john mu's post from this webmaster central help forum thread is 3 years old but might give you some things to think about.
Canonical conflicts with NOINDEX?: