Low carbohydrate and vegan...hmm, I'm curious where your energy source is coming from. Lots of fats and some protein from foods like beans and lentils, though these are also high in carbs.
In any case, if you're not training for any sort of intense event and just going out to ride with friends there shouldn't be a problem. If, however, you do faster rides of even 3+ hours, that might be issue with refueling. I'm not saying you can't do it. I've done four-hour rides in a fasted state with perhaps a banana halfway, but my body is used to training in a fasted state, and so it's probably efficient at using fat as a energy source. YMMV.