Summing up the orthodox ontology: All quons in the same quantum state are physically identical. The wave function gives a complete account of the physical situation of a single quon. The relationship of the experimenter to an unmeasured quon is one of quantum ignorance: the knowledge he lacks is simply not there to be known. A single unmeasured quon takes all paths open to it. Measured differences between identical unmeasured quons arise from quantum randomness.
