Just one thing I suggest for anyone who uses breaks in their harness. Try on a dive breaking them. All of them.
This was a mandatory part of the trimix training I did, where you had to break the harness whrever you could, leaving the waist band in place to hold your rig vaguely on your back.
The exercise was easily completed by all on the course I was on. We were carrying stages which meant that the breaks under our arms made no difference to the operation of our gear. If we weren't carrying stages we could have held the D-ring with one finger and ascended.
Fact is a break in your harness isn't going to kill you. Not having a break in your harness could.
Remember that your rescuer may well (and in a lot of cases it is quite unlikely to be) the one or two people you dive with. It often isn't a boat skipper. Often it is an amateur rescuer who knows nothing about one piece harnesses, and didn't kit themselves out the morning they left to go diving to pull your unconscious body out of the water. They may not be able to get to their knife easily. They may not have one at all.
Faced with a sinking body which is dragging me down no gas available, obviously and needing one hand to keep your face above the water, I could have some fun trying to get to a knife and cut you out of your rig. Honest truth, I think it would be bloody hard.
Just my 2c. I used to dive a one piece harness, then we did a whole lot of rescue stuff with some quite experienced and competent divers. They all, to a man, ended up with me playing dead until they had the shears out. They simply couldn't remove an unconscious body which flaps about all over the place from a one piece harness. We tried all manner of different techniques. Now I have one break under my right arm. It makes rescuing me feasible, makes it much easier when I have dryglove rings on to reach down and free myself from one side of my rig in seconds, and also makes it much much easier for me to get out of my gear in the water.
Make your choice. But let's face it, one piece harnesses are mission critical on the tiniest percentage of a tiny percentage of dives. And the quick fix and easy solution to a broken clip is to carry a cable tie in your pocket. Just a really big thick cable tie. If the clip would go through it then the cable tie will as well. With a relatively briefly trained buddy you would have no problem at all doing it underwater. If the clip has failed leaving the main body intact it's even easier.
Again, a massive benefit, with a very small downside, disregarded for reasons pertinent to the few instead of included due to the risk to the many.
Digs.



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