Hi,
I doubt you can, SWS does use iTween ( per description), but it only does it internally, you would need to call SWS explicitly to ask for animation. I am sure it's feasibly to create custom actions in playmaker for this tho. I can't really commit to building them right now, I have two pending framework to do first ( vectrosity and Input.Touches), but if you do need them urgently, pm me.
Bye,
Jean