I don't think they care honestly. In some ways the more militant Xaela are in some aspects only a few steps removed from Orks, at least with regards to fighting.
They're warriors, they fight it's what they do. Who they're fighting and while isn't particularly material, so long as it's rightful leader giving the orders. He played the game on their terms, so they're more than willing to go fight for whatever, wherever.
To an extent they seem themselves and their lives as weapons, to be wielded however the winner sees fit.
