Cinch system makes the shoulder straps adjustable. Effectively it means your shoulder straps will be a different length each time you get in your rig. I don't recommend it.
Halcyon Dive Systems
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Ok I see. This is new to me as I have always “cinched” in my straps after I enter the water on my existing BCs. Im not familiar with just having the straps all set to a set length.
Sometimes when doing pool training at my buddies pool I inflate my rig and place it in the water. Then I don the rig on my back and strap in. I always loosen the straps fully and “cinch” in. Im not saying I would ever do this in OW. Im curious how easy this maneuver is with fixed straps?