AES Outputs on Bluefish444 Cards

Hi guys,
I am looking into buying a Bluefish444 Epoch Card. As this card also has AES Inputs and Outputs, does anybody have experience using them as Audio out from Caspar?
I'd like to setup 3 output channels and use 3 of the AES Outputs to use with those 3 video channels, so that each video channel outputs its audio also on one of the AES outs.