Agreed. I now use the 5' primary (yellow hose & yellow reg) with a black octo on a necklace. I love it. No issues at all. I've always heard panicked divers will grab your primary rather than give the OOA signal and wait for you to donate your octo, so I may as well assume that is the procedure and configure my kit accordingly. I've been diving 29 years, so being at depth without a mask or a reg in my mouth does not trigger instant panic.You should also think hard about the length of your primary hose. The standard long hose is 210cm/7'. That length means that you should have a cannister or something else to stow the hose loop behind. I use a 150cm/5' long hose, which doesn't need stowing. And seriously, you don't need a 210cm long hose unless you need to swim single file while sharing gas. And if you need to swim single file, you're most probably in an overhead environment, where we rec divers have no business being.