Diver0001:I think a lot of people would disagree with that. It depends on *how* you go about things as much as the tools you use.
The reason agencies refuse to publicly acknowledge the safety benifits may have more to do with liability than you think. The PADI public line and the things they write to their members, for example, are completely opposite on this point.
Moreover, all of these "safe enough" arguments are a load of b.s. if you're the one getting the hit. DCS incidents are still very common and I see nothing wrong with tilting the odds in your favor.
R..
Hence my addition - you tend to dive to the limits... when you'r 2 mins away from deco, I dont think it makes much difference whether you're on air on nitrox - you're close to the line !
eric