Yes.  Why waste a H9 for a volume swell when you can just connect it passive before delays anyway?

The only reason I can see you would do this is if you have multiple H9's,  plenty of of cash to max them out….. or you use the EXP primarliy for other effects.

I have thought about building a switching router to switch between passive volume or EXP but I think I would rather just use it as a passive volume.