Sadly mixing configurations for different nodes or regions of nodes is not supported at this time, although it is on the task list for some point in the future.
For now, perhaps two different cache instances may do the trick? One set up with BR and the other not. Not sure if this helps your use case any though.
Well, at least I don't have find it out the hard way now...
I'll guess I will start looking into other ways of propagating the state information needed through other channels, be it a second cache or something else.