"Out-of-air" and "share air" signals

[mania]

Hi Mania-- you're verging inexorably into the long-hose-and-bungeed-alternate rationale. I understand that rationale, but honestly didn't want to debate that here.

Marek - as it was already mentioned this has absolutly nothing to do with long hose, dir vs. traditional set up. I was taught during my SSI OWD with absolutly conventional set up to donate the primary reg.

And BTW how many of you expierienced OOA - real ones - situations? To me it hapenned once - not even my buddy. He had a yoke 1st stage and uw the o-ring bursted. So within few seconds practically all air was gone. This guy really was OOA when he reached me. There would be no way to give him my octo - he was so panicked that he had to be reassured that he gets WORKING regulator. So I gave him mine, took my octo (conventional one), after some time he calmed domw and we swapt regulators.
BTW - majority of instructors from most of agencies here teach to give primary. And if I remember well not so long ago it was advised by PADI to teach this way - for the resons already metnioned.
You have to see OOA diver. Not low on air but Out of Air. Then you will know why.
Mania