Welcome, Jules, and thanks for your question. Since this recipe is a gluten free version based off of Susan’s Blueberry Banana bread, yes, you can just use two cups of wheat flour instead of the sorghum and tapioca flours. You would need to adjust the proportion of baking soda and baking powder back down to 3/4 tsp of each. In gluten free baking more baking powder is needed. Here’s the link to the recipe I improvised on, so you can double check proportions of flour and baking soda and powder.
http://blog.fatfreevegan.com/2009/06/blueberry-banana-bread.html
Happy Baking!
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