Pamela, there are various mutations of Cl. Iceberg around. When it was first introduced, it was classed as a once flowering type only. Like Blaze and a number of others, either through further mutation or good selection for propagation, I'm not sure which, strains which flowered all the time became available and many nurseries obtained that strain to replace their once flowering ones with. I've seen Cl. Iceberg in these parts which flowered as heavily, reliably and continuously as the bush form. Like the mutation in Mlle. Cecile Brunner creating shrub, continuous flowering smaller climber and rampant once flowering cathedral eater, the same thing has occurred with Iceberg. If you seek one which repeats well, shop around for it in late fall, looking to find one which is still heavily flowering. Or, poll your friends to obtain cuttings from flowering stems which are flowering as late in the year as possible. No guaranty, but your chances will be better of obtaining the repeating mutation, particularly if it's from a climate as similar to yours as possible.