[Question] Exposing rx subjects from presenter to Interactor ?

Original issue: https://github.com/uber/RIBs/issues/338

I was thinking whether there is any draw back in exposing rx subjects from the presenter to the Interactor. Taking an example of loading all employees in a tableview

Presenter:

protocol EmployeeListPresentable: Presentable {
	 var empSubject: PublishSubject<[Employee]>{ get set} // Exposing rx subject
}

Interactor: //Assuming here employees is an array of Employee objects self.presenter.empSubject.onNext(employees)

This is more convenient at times compared to calling a function. for eg:

protocol EmployeeListPresentable: Presentable {
	 func updateEmployeeList(_ employees:[Employee])
}

as the subj is already bound to UI and reloading takes place automatically.

Start by reading the linked original issue and the Swift presenter/interactor examples in this report. Determine whether exposing a PublishSubject is intended to be supported and document the resulting guidance or decision; the issue is done when the design question has a clear, accepted answer.