iTween for Customizable-at-runtime Character Body Animations

I'm wondering if there is a maximum for simultaneous calls to ITween - it seems to work well for simple character joint animations (such as a basic walk), that can be customizable at runtime with different curves, for example.

I'm trying to figure out an optimal way for character body animations that can be modified at runtime and iTween seems the way. Is there a reason why I shouldn't use iTween for this?