I have Brath+ST and a pair of Black+Decoy. If I use ST to pump one of the Blacks to 8, can the second Black use Decoy to swap up to 8 with Brath without affecting the first?

Or does the first Black's PS drop when Brath's does?

e: Nevermind, I'm retarded, Brath+Decoy/2xBlack+ST works better.