Loyalty and split-faction

Would loyalty ability work if there are split-faction champs deployed? For example, in FF FW Elsari Swordmage will not trigger loyalty while Demonologist (FW/UD split champ) is playing. The description says as long as all friendly units share a faction, so it should work!

 

It should work in the example you're describing. So maybe it's bugged.

 

I remember it working like you describe.

 

I know when I would use Hraken in my ST/IS Leoss split, Regal Presence would still grant loyalty to all the Leoss