This is the experience I was hoping for with Avalon, and if not for my son's pesky cord issues, I would have gotten it I think. I came very close.
Morristown has one tub room, and one portable tub. It comes down to luck when you arrive, whether or not both will be in use already. As for protocol, they told me the same thing about laboring in the tub but not giving birth there, due to being a VBAC. That was ok with me though. And I could see if things progressed quickly there might not be time to switch out of the tub.
In my situation, we went into it knowing it would be a difficult labor. I was nearly at 42 weeks and we had an ultrasound to make sure everything was still ok, fluid-wise. It was, but my DS was wrapped up in his cord. When I finally went into labor (on my own, no induction, despite being 'post-dates'), I was at the hospital for almost seven hours with almost no progress (but strong, frequent contractions) before the option of a repeat c-section was brought up. I did wind up going that route and I'm glad, my son had a double nuchal cord and never descended; I never got past 5-6 cm no matter what I tried (walking, squatting, shower, etc.) I never even made it in the tub because they didn't want it to slow me down even more.
Anyway, despite the outcome not being what I was hoping for, I felt very peaceful about the whole thing. My wishes were respected every step of the way, and the protocols in place at Morristown for VBAC patients were not intrusive. They placed a heplock after I arrived so that an IV could be placed quickly, but did not insist on constant IVs. They have wireless monitoring so they could continue to watch as I walked back and forth from the tub room to the nurses' station many times. :)
Do a search on Avalon here, if you haven't - I know I've posted about them before as have other moms. The only drawback is that with several in the practice, there are bound to be ones you find you get along with better than others, and you won't know who you're dealing with until the day you go into labor.