g1smd - 10:50 pm on Jan 23, 2013 (gmt 0)
When Googlebot requests example.com/page and www.example.com/page those are two different URLs.
It is important that you see how many requests each one gets and how many links each one has.
With the right redirects in place, Googlebot will request the non-canonical versions less and less.
Looking at the incoming links report for the non-canonical hostname gives you some clues as to which sites need to amend the way they link to your site.
I'm looking at an 8 year old site that had major work done to it about 18 months ago. Googlebot now requests 800-1100 www URLs per day and 0-6 non-www URLs per day. That tells me things are as "fixed" as they are ever going to be.
A combined crawl report would be completely useless.