It’s been a while since I’ve looked at this, as I got moved to a different project, but it seems like I remember seeing a method of casting a blendspace as an anim sequence, which can be played from slots…?
Again, the details are foggy and I know I never got it to work properly (I could play a one-off blendspace via code, but it was full-body and, worse, wouldn’t return back to the default anim), so I can’t make any promises. Might take a look again soon, though.