· Sort of member - perhaps, possibly, maybe
Mark,My view is, if your diving multi tanks in a wet suit then a duel wing is a must have. The usual reasons put forward to not to have a duel wing are rubbish.
Whilst I usually have a great degree of respect for what you post I don't necessarily agree with you in this instance.
Question: What are the millions of divers using "normal" BCDs doing when their BCDs "blow up"?
Answer: They don't blow up.
Comment: A Wing "BCD" is even less likely to blow up, given that the diver/owner has had the intelligence to buy one in the first instance.
When I use my semidry (usually the case in my waters) I have no requirement for weights if I'm in (steel) twin tank mode. Speaking entirely personally I don't consider that a problem.
Yes, I know that I can swim up in that configuration if I have to and, yes, in my case the dive boat is always anchored and I, but always, ascend via that anchor line.
Those two are the major differences to what you are used to in the UK. Sometimes it's worth pointing out that there are differences in diving.