Meh,while not ideal in a perfect world I have no problem with a controlled share where there is backup reserve should crap hit the fan. I've done the same,breathe to 100bar then share with someone less prone to sucking down a cylinder
Nowadays if it's going to be a deeper dive or a nice reef i'll throw a spare al80 on and me and my wife can breathe it if the need arises
Nowadays if it's going to be a deeper dive or a nice reef i'll throw a spare al80 on and me and my wife can breathe it if the need arises