Well, assuming Adam is correct, it turns out this is basically Jack Bennett's Green River approach, as described here: http://home.rochester.rr.com/tslpag/GreenRiverApproach.htm
I seem to recall some more recent discussion about conditions on that route (more recent than the 2004 results of searching this site for "Green River approach") but that may have been in the A to Z.
I'm particularly interested in what that last few hundred feet up to the summit are like.
Oh yeah, and what my feet will feel like after following Mark's suggestion! ;-)And my job, and my family (or subsequent lack of both) and...