I've posted about this project so many times while it's been in progress, but at last I can say that it's finished!
Woven from merino wool / silk, spindle spun. Warp is commercial cottolin, woven on a 4-shaft 32" loom. Pattern is a herringbone twill, the draft is among the photos on Flickr.
More photos at http://www.flickr.com/photos/shieladixon/sets/72157631870368704/