Be really curious to know here if the unsustainability is due to how its been developed and used in that context tbh. There are definitely other practices where ahhh, a lot can differ. Fitting that into a formal INT cycle though not sure. I can't think of anyone that did it that way specifically.

As a mechanism for compromise it’s problematic because of the negative feelings it engenders. As a positive motivation it’s unreliable because, simply put, people fall out of love. For a short-term physical access op, fine, but for long-dwell reporting, esp in a hostile environment, absolutely not.