I have not worked in a situation with multiple project managers for a single project. However, I do see the value in such a dynamic. Having multiple project managers would ensure that there is no one person shouldering the burden of the entire project. With multiple aspects being managed by several individuals, the project could be more dynamic. It also brings into perspective multiple opinions from people of different backgrounds.

However, some project leaders prefer to be the only one mainly in control. This would lead to potential tension in the group when someone feels overshadowed by another. There must be a clearly defined set of roles so that no single leader is more stressed or in more power to have a harmonious relation.