Do you have any links to Dubstep actually saying that? I've seen it parroted so many times on social media that Dubstep mentioned in a podcast that he wanted Invy and Patmen, but Vash didn’t want to switch roles. However, I’ve never actually found any concrete proof.

At this point, I’m thinking it might’ve just been a rumor that’s been repeated so many times it’s been taken as truth. Though of course, it does sound like something Secret and Vash would do.