I'm still planning on doing that, but my idea has switched looms. I was planning to warp my rigid heddle loom with two ends per slot or hole in the 10 dpi reed, making a basket weave effect. I'm now thinking it would be much smarter for me to drag my 8-shaft table loom out of the closet for this project. For one, the scarves would have a nicer drape done in a twill. Twill is much easier to do on a multi-shaft loom. Another good reason is that I could warp and weave both scarves at once on the larger loom. I'm not so sure my Beka rigid heddle loom would be able to handle a length of 13 or 14 feet. And a third reason; weaving of fine yarns goes much faster with a boat shuttle than it would with the stick shuttle necessary on my Beka.
So there ya go, the thought process behind switching looms for this project, even though I find warping the rigid heddle so much easier....and less frightening and less prone to warp snarling error.