As for ROUZ, for EDGA: the prop firms just mark it AROUZ from what I understand. However - I dont see how much it could improve my rates. ASUROUX will charge me (trading FAZ/XLF) for liq flag I,X,G,J. Otherwise its either N or W. That is, it will only charge for route-outs. AROUZ has same rates, question is - are there cases where ROUZ will give you N,W (0 remove) and ROUX will give you X,J,I etc ?
That is, are there (theoretically) cases where ROUZ wont charge and ROUX will?