Yes and no. Most mainstream paleo isn't low carb enough to keep you in ketosis. Sisson's Primal Blueprint is probably the closest to advocating for keto. In reality the mechanism for weight loss is most likely increased satiety from higher P&F intake vs Carb intake (without dropping below ~50g C/day for keto).
[1] http://ramiro.org/vis/hn-most-linked-books/