I've tried the "scumball" and its a PITA. It takes a while to get the mouth piece in. It is secure, do doublt, but when my buddy gave me the OOA signal and I pulled on the octo the mouth piece came off. Not a good way to go when someone is OOA.
I personally agree with the necklace - its out of the way and right where you need it at all times. The bungie is tied into a loop so if you pull hard on the octo it releases the octo. Donating the primary 2nd stage on a long hose also makes sense to me and this is how my wife and I dive. Otherwise the necklace wouldn't make as much sense, especially if its still on a longer hose as in 'standard recreational' setups.
I personally agree with the necklace - its out of the way and right where you need it at all times. The bungie is tied into a loop so if you pull hard on the octo it releases the octo. Donating the primary 2nd stage on a long hose also makes sense to me and this is how my wife and I dive. Otherwise the necklace wouldn't make as much sense, especially if its still on a longer hose as in 'standard recreational' setups.
