I have a 19FD that we tow with our 2010 Acura MDX.
The MDX has the bit in the manual about a WDH being "not recommended", but the reason it states is due to handling, not anything regarding body/frame issues. From what I could tell from my research is this is more about them covering their ass from liability more than anything. Any tow vehicle will have problems if too much weight is taken off the rear axle, but I think it may be even more pronounced on these with their stability control with the built in electronic anti-sway. So, I feel as long as your WDH is setup correctly you should not have any worries.
As to the WDH itself, we have an Andersen WDH that works great and is pretty much silent. Cost wise it is more expensive, but being light and quiet sold me on it.
2018 Flagstaff E-Pro E19FD
2010 Acura MDX