In a true agile world, the best type of "project manager" in Agile is a servant leader. The most valuable services that the leader takes on, in my opinion, are:
* Cutting down roadblocks/impediments
* Communication regarding status
* Evangelism and education regarding agile
* Inspiring and empowering the team to solve problems Saving Changes...
not sure about the question context. I consider both.
If I am a Project manager for an agile Project I can play both roles. If I am playing the role for a funtional área I can be an agile leader. Saving Changes...