Hi Anthony, I am not in a "creative" field right now, but I can speak to this question drawing from the time I used PM tools to manage marketing campaigns for an FMCG client.
It worked really well. The structure that PM methodologies provide ensures you don't forget some key portion of the campaign, ensures your supply chains are in place, lead tines are thought through. It does also tend to give the "creative" roles an idea of what their flex is to deliver on their outputs. This can be viewed as a positive, in my opinion, since it helps provide visibility on bottlenecks and alerts people when delays threaten to push everything off schedule.
