I stole this excellent pic of Rainier from the TR on Little Tahoma and drew in (as best as I can tell) the wanded DC variation. We summitted on Sunday via this route, and although the route was fairly solid in the morning, walking under the seracs and over some of the bridges in the afternoon got pretty nervy.
We dubbed the first area with the fixed line the Hillary step for drama enhancement. The other crossings we dubbed just plain sucky. I'd agree that this is a much longer variation than the DC.
Little Tahoma at dawn:
Rounding the "soft bridge" at 12,500: