| Having once been in a situation where another few seconds would have meant I no longer needed assistance I can honestly say that another 20 or 30 seconds at depth can make a big difference. Of course if breathing off such a little thing I would hold my breath for as long as possible (horizontal escape plan) before taking another breath which would extend the 20 to 30 seconds by quite some time.
Would I buy one? No. I'd rather save up and buy a 3 ltr pony which gives some real redundancy.
Would I take one on a dive? Yes, if there was no other option.
Will people take the piss? Yes, but if it saves a life then who cares.
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Citius, Altius, Fortius? No: Lower, Slower, Fatter. |