I'm more or less a fairly heavy con on them.
First off, I would recommend that anyone thinking of buying one should spend some time practicing using it as an alternate and swimming with someone. It's tougher than with a standard alternate, at least for me.
2nd, and this is a biggie because it doesn't fall into the "if it's ever needed" category. I can't tell you how many people I've seen come on a boat I've been working on and have their Air2s freeflow. It seems as though it happens much more frequently than I can recall other regulators or alternates freeflowing.
Just my opinion.
First off, I would recommend that anyone thinking of buying one should spend some time practicing using it as an alternate and swimming with someone. It's tougher than with a standard alternate, at least for me.
2nd, and this is a biggie because it doesn't fall into the "if it's ever needed" category. I can't tell you how many people I've seen come on a boat I've been working on and have their Air2s freeflow. It seems as though it happens much more frequently than I can recall other regulators or alternates freeflowing.
Just my opinion.