I tried to find the answer to this question in old threads but couldn't. I did see it asked, but it was promptly answered with "clean up your own house before asking this question" or something similar. The argument against having a double bladder wing is it an answer in search of a problem. You should be properly weighted and not need one. Sounds like good advice for any kind of diving. Overweighing is not as bad in a drysuit because you have redundant buoyancy. My question is: what issues are with double bladders that are not there with a drysuit. Same number of hoses valves and so on. It is no more complex. The extra inflator valve is the same kind you deal with every dive. Keep the spare unplugged and the leakage problem is no real issue. You must be kidding about extra drag when compared to a tri-lam drysuit. I have had this discussion with others and it turns into an infinite loop argument. Of course someone may give me a simple answer where I will just go ahh I understand.