Well Angelica has a T1 romance route (Upgraded from T2)...however, if you're on the SecretSub route...no idea how the hell that is going to work. I would imagine, much like with Alessa, it's an unusual type of 'love' that really isn't...and she won't respect you fully...even if as said, she will always have your back (as it's in her interests to do so). So there is definitely now 2 different routes for Angelica on the DomPath.
Unless he keeps it in exactly the same format...I for one, hope he doesn't.