I have found that with an appropriate bullpen setup (for having specialists, I went with 1 LRA, 2 setup A and 2 Setup B, then 1 RHS & 1 LHS) ,and appropriate Pitch Counts (5-15) and Inning Available settings (I went "Any" here, I think. Been a while), it works out just fine. I had a pair one season both post era's around 1.50 and they have been killed as normal RP. Just my experience though.