[josedesucre]

I don't know about Carlos Coste, Trux. Every report I've seen of his accident, including his own, says that his ascent was slower than it should have been, and suggests that the likely reason for the bent was that he spent too much time under 100 meters. Although, of course, nobody knows for sure.
Regarding this bc belt, you are certainly right, no doubt that some will use it to go deeper that they should. But, ... that's human nature. Some already do it without any artificial device.