"The trips are always the most memorable part of any season of Housewives, so it makes total sense they'd want to do this," the source noted. "If the women want to do it is another question." Well, it seems like they did, and there could be more mash-ups in the future. ET's source said the original idea would be to repeat this format with new women in new locations if successful. This Housewives show, but past seasons of every city are currently streaming on the platform. RELATED CONTENT: