I tried it, too! Mine turned out pretty good. I baked mine in my cast iron pot with lid. Mine didn't rise really well, though I may be expecting too much, since I still tend to have a wheat bread mind set when it comes to baking bread. How much should I expect it to rise? Mine rose enough that it caused the outside to crack, so I know it DID rise. I let mine rise overnight, too. I subbed arrowroot for the potato startch, and since I didn't have any tapioca starch, I used my tapioca granules, added them to the water, and whizzed the water/tapioca mix in the blender for about 5 minutes before dumping it into the dry ingredients.
Hugs,