Old thread, I know, but I just wanted to say it is completely okay to include buckwheat and other seeds and grains in a low carb diet, as long as you do test your BG to make sure you don't personally have an adverse effect. The attitude towards carbs from meat-heavy keto followers is always going to be negative, but as part of a low carb vegetarian or vegan diet, in moderation, buckwheat is worth giving a try! I like the toasted buckwheat and just have a little as part of a salad bowl, or bulk it up with lots of veg and nuts pilaf style, and I also use buckwheat flour to make breton crepes that are so thin there's not much per portion, and roll them up with Tofurky smoked slices, tomato, wilted spinach, spring onions and homemade "cheese" melt and bake them until crispy. Yum.