[Kameron8]

Transformation Spells override any active Transformations on the caster, on cast.

This mirrors my own thoughts on the subject. I see no good reason why someone shouldn't be able to invest 6-9 momentum to replace an effect on themself, but I see plenty of good reasons why people should be disallowed from stacking them. The only murky water I think exists here is whether to classify Ki Awoken as a transformation, but I don't want to branch too far off topic.