Yep! Requiring a separate account for Persona was, in hindsight, misguided. I've written a bit about what Persona got right and wrong, and how we* plan for Portier to be different, at https://github.com/portier/portier.github.io/blob/master/Oth...

*Though Mozilla supported my work on this, Portier is an independent side project with significant code contributions from folks outside Mozilla.