I've been making sourdough tortillas for years using sprouted whole wheat spelt for the starter and white spelt for the dough and started making sourdough bread back in August. I experimented with organic Einkorn, Kamut, Spelt and Rye (mostly ancient grains) and have found that I still like spelt the best. Three months ago I happened upon an interview where using long fermentation to reduce the gluten to almost nothing was discussed (no, I didn't bookmark it so I can't find it) and was surprised to learn that 48 to 72 hours was the way to go. WHAT?!! I'd been using a 12 hour refrigerator ferment and was getting ready to step out of my box with a 24 hour ferment but 3 days?! I tried it and have found that 72 hours in the refrigerator really does change the dough into something extremely satisfyingly chewy and sour and will never go back.
I found this blog post that talks more about the benefits and method of the long ferment. There is a video included in this blog towards the bottom that is a good illustration of how soft the dough is compared to what we may think. Over time, I've simplified how I mix the bread, learned the feel of the dough and played with adding various ingredients (like cracked wheat, flax seeds, millet, semolina, dried fruit, etc) and have really honed in on quick and easy. I found that using a "glaslock" bowl to mix and ferment the dough in is my favorite and I bake in a dutch oven. Simplicity is key for me.
My body doesn't tolerate any of the gluten free grains (rice, buckwheat, teff, etc) and I wasn't successful in my attempts at making sourdough bread using those grains either. Since every one is bio individual, you may or may not be able to tolerate this type of bread and you may or may not be able to tolerate every grain that you try. I feel fortunate that this method has worked for me.