iReport roadmap is for me a good sign since I'm still waiting for Hibernate integration implemented in iReport. As a matter of fact, I didn't tried to build a Jasper Reports report without iReport. And I'm ready for next week release !
JasperReports version 1.2 shows the progress in integration with Hibernate and some improvements about the run-time style modifications. I'll wait for the iReport to catch up with JasperReports for taking a new try.