Of those 5 swingmen Posey/Maggette, Giddens, Walker, Pierce, and Ray, one of them probably won't be in the rotation (maybe Walker to rest?).
It sounds okay, as it would just be like having an insurance swingman in the 13th-15th roster spot, while having a backup for both the 2 and the 3.
We had Rondo/Sam/Eddie and Pruitt on the Injury Reserve during the playoffs..