Diving in a team of three, my buddy had an uncontrolled free flow. I donated my long hose and we shut her gas down. She was very comfortable doing her ascent on my long hose. By having the air2 (actually atomic's version) on my inflator hose, it meant 1) having to take it out of my mouth to vent and 2) my head was stuck looking either straight forward or to the left. The short length of the inflator hose restricts your ability to look to the right. In order to watch where all of my team members were, I had to helicopter around occasionally to keep everyone in view and of course in doing so, had to coordinate with my buddy for those movements. None of those things were a big deal, but a simple octopus bungeed under my chin would have allowed me full range of head motion and would just been simpler. Sure, I could get a longer inflator hose, but then that begins to encroach on some of the streamlining that the air2 is aiming for. For me, a bungeed hose under you chin still feels pretty streamlined.