johndiver999
Contributor
Exactly. What's holding them in? It looks like a zipper. You can undo a zipper and pull out weight just as fast as some of those pinch here, pull there or squeeze buckle+velcro weight pockets. Plus you have control over how much you drop.
Rely upon a cheap plastic zipper in a life or death situation?
Ever seen a zipper get jammed with silt and sand? Ever seen a zipper get crushed or damaged - say by a scuba tank that fell over? Do you expect a diver to check the functionality of a zipper before and after every dive?
Fastex buckles can crack and fail, but they are much more robust than a zipper.