OIC Callback OnjobCompletion vs Event based

Summary

OIC ERP adaptor has a new update

Content

I have found the onJobComplettion operation for callback is no more generic for all the objects(Payables,Receivables,Import Journals). Oracle has made it callback as object specific. We cannot make a callback as generic for all the objects. Is it true? and is it a good approach to go with event based callback, so that callback service could be generic for all the importBulkData operation. Please let me know your input on this.