RRDAVE,
I'm going to pounce on you a bit. Please understand it's not a personal attack.
vtwarren, why do you think that the intergated 2nd is a bad idea ours work great and breath efforts pretty low as well.
Integrated inflator/backup regs have the following drawbacks:
1. They're unreliable.
2. They cause difficultly in controlling buoyancy.
3. They're hard to service.
4. They don't breathe well.
5. They are not reconfigurable underwater.
6. If you have an LP hose failure, you lose both your BC inflator and your backup reg simultaneously.
7. They make it hard to move your head around.
8. The inflator should be tucked close to your body and secured to you, not left drifting away. If you keep the inflator properly secured, it'll be next to impossible to use an integrated backup reg.
... and there are more, but that's the short list.
Integrated inflator/backup regs are a completely bad idea.
lets face the facts we should really never put our selves or our buddys in a place that we have to use or 2nd's but it could happen!
Exactly -- "it could happpen, " and that's why I have a real reg as a backup. Most people seem to have this attitude that the backup is necessary because PADI told them so -- not because they actually care about using it when they need it. I don't want to have to breathe off some gimmick in the midst of an emergency -- I want to breathe off a backup reg that is identical to my primary.
I mean when was the last time you dove and used your 2nd?
The last dive I did. And the dive before it. And the dive before that one, too. I do a safety-drill involving a practice air-share, staying neutrally buoyant in the water column, at 10 feet, before every dive. I service and care for my backup reg every bit as carefully as my primary. I depend on my backup every bit as much as I depend on my primary -- the only difference is that the primary is most often the one in my mouth. Because each reg is part of my life-support system, I depend on both. I don't use some gimmick that I can't depend on, just because it's neat to eliminate a 26" LP hose.
- Warren