As mentioned, I hiked it last year from Waterton to Kakwa Lake. It took me a little less than a month; August 12th to September 9th, I think. Pretty much all the resources I used in planning my hike have been mentioned: Chris Willet, the Owens, Justin Lichter. Since finishing, I've been working on typing up all the supplemental-to-the-guidebook information that I have and creating a mapset for future hikers. If you're interested in getting a copy of either, just shoot me an email at benmayberry at gmail dot com.
Like Shawn said, it's really one of the best trails out there mile for mile.