EireDiver606
Contributor
They don’t use air 2s because they like to stick to what’s reliable and time proven.Just an observation, most (all?) tech divers don't rely on an air2.
Now, I'm not implying that tech divers are the final word on all dives, in all situations. I'm not even implying that all tech divers are necessarily smart. However, on dives where the margin of error is slimmer (cave/deco dives), most opt not to have an air2.