Hey Paul,
Thanks for replying - the solution you described (matrix params deserialising into a list) is what I've got now as a workaround. I just thought I'd done something really silly and missed a way of getting Jersey to do this conversion for me.
Anyway for now I'll plug away with the matrix params solution for the Neo4j REST interface. I'll refactor it as and when the URI template stuff evolves (or perhaps even find some time to help evolve it).
Thanks again for your help, it's made my day way better.
Jim