Quote Originally Posted by Marc Bryan View Post
During a routine dive, which piece of equipment do you use more often, the inflator or the reg on the necklace? The inflator of course. If you experience a roll off, the lack of inflation would indicate this much earlier, and without near the stress, of waiting until in an OOG, to find out that your backup reg has no gas supply.

This is the reason I supply the inflator from the left post.

Edit: tj was posting this at the same time.
so would, A: not impacting the ceiling or B: checking the valve after you impact the ceiling