I felt like the Herbie was pretty safe when looking at it. I have a hard time to think the drain and the emergency would ever get clogged to the point of an Emergency flood.
I am sure over time without any maintenance it could happen but I would think it could take several months to accumulate and it should get discovered well before it's an issue.
I'd rather do a Herbie for the sake of less plumbing, however if BA is better with more safe guards and all it takes is a few feet of plumbing and another hole/bulkhead I ask "why not?"
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