Can multiple Squishy objects collide and deform each other?.

I'm wondering if Houdini is able to treat an object as a rbd and a softobject at the same time?

I'm trying to get a series of balls, ballons or gelly cells tightened within a fixed area. Some of them might have a keyframed changing size, which affects the other ones by deforming and pushing them away.
I have a setup where several balls deform when they collide with the boundery object. Sadly enough the objects still don't collide with each other, do I have to setup a seperate collide relationship and how does this work? The merge node doesn't seem to handle this, connecting the merged squishy objects to a multisolver and connecting a particle and rbd solver won't do the job ether.+