I have a bungee necklace and I'm thinking that actually in a sidemount I see it as not the best option, I'm thinking from a safety stand point, if another diver is in OOA situation they normally go for the regulator one have in the mouth and normally not in a controlled manner, as sidemounter we have to keep both tanks at fairly the same pressure which makes us swap regulators often to keep the same volume in the tanks.
With that said, if it happens that one is breathing with the regulator that have the necklace bungee, and an desperate diver OOA gets you by surprise and go for that regulator, it is possible that my mask go with it our the mouth piece gets pulled out, or I get smak back with my same regulator, making the situation not exactly better, it is hard to predict how the real situation can go, so better take measure to avoid situations escalating
just having both regulators hanging around my neck I see it as less possible for those situations to happen, but I like to hear your opinion as well.
With that said, if it happens that one is breathing with the regulator that have the necklace bungee, and an desperate diver OOA gets you by surprise and go for that regulator, it is possible that my mask go with it our the mouth piece gets pulled out, or I get smak back with my same regulator, making the situation not exactly better, it is hard to predict how the real situation can go, so better take measure to avoid situations escalating
just having both regulators hanging around my neck I see it as less possible for those situations to happen, but I like to hear your opinion as well.