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I'm just wondering how I would have to modify the saving mechanism in the rj abstraction so that I could have two running side by side?
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it's been a long time since i looked at rj, but from memory it uses something similar to sssad for statesaving, doesn't it? So, you assign keys to each of your abstractions and save according to those keys, yeah?
in that case, i would just bundle my entire 'scene' into a bigger parent abstraction, and use a $0 (or similar) prefix to all my state saving keys so that state loading would be local only to that parent, and not to the other channel's parent.