I have had) the plain old A. saponaria and it thrived for a good 15 years in soil that could stay very wet after storms. Otherwise it was not irrigated at all. The recent freeze took it all out. I had been trying to figure out how to remove or at least thin it, the patch was about 8' across. The soil here is heavy and digging it out was really difficult. I don't think your fancy hybrids are as tough as this one was but you might try a few pups and see how it goes. Beware of these unprecedented freezes though.
