ams511
Contributor
As far as the AIR2 is concerned, I use one of those as well. I got into a semi-emergency situation on a night dive and realized that having your head cocked and locked in one place is a horrible place to be in those situations (the hoses make this a very uncomfortable reg to use. And dangerous if you ask me.). I immediately put a 6 foot hose as my primary and installed an octo with a necklace. Now the AIR2 is my third option. Really its just a very solid power inflator. I could lose my AIR2 as well and not lose any sleep.
How long is the corrugated hose on your BC? You really need a long flexible hose for an Air2. Also you need an octo length hose on your primary or else air sharing is a pita.