So, I haved searched and I couldn't find myself and answer. Dwarves have kick attacks as restricted actions. Does this apply to the two tricks gained from the Kicking feat chain (i assume so but...) what about the base benefits of the feats?
I guess the question would be: What, outside of natural attacks, constitutes a Kick Attack?
This is left a tiny big vague on purpose. The intent is that any attack using the legs would be untrained, and that's how I'd run it at my table. Some GMs might be more forgiving, however.