Main partner Diego Sierra receives significant praise from clients. They enthuse that "he really gets to the point and has great response times too," whilst others say that "he is both incredibly polished and knowledgeable about Mexican law." Market commentators go on to state that "he is a tremendous colleague who is very sharp and interested in growing and learning more about the practice area." Sources go on to highlight his expertise in contentious matters, and he remains active advising clients from the US. He is also admitted to practice in New York.