I am going to take a perspective on this that I hope won't be taken the wrong way...
So what is the real issue here? Someone wants to mix freediving with tank diving. With the mountain of evidence (and the lack thereof) regarding DCS, why would you want to try and do both? Is your life worth risking for a sport? I am going to rant again and say do one or the other - you are risking not only your own life, but the lives of others who care about you should you become seriously injured or die due to making a bad judgement call.
Diving is a great sport - I love it. But I also know that it isn't my life. I have a wife of 20 years and 2 great kids that I would rather see grow older than be 6 feet under. I have read of many divers who left behind a wife and several children because they wanted to go that much deeper, or made a poor judgement call on their dive.
For me, it just isn't worth the potential of doing that kind of physical damage to myself and the emotional damage that my actions would inflict upon those whom I care about the most.
From a Certified PADI Rescue Divers POV - if I knew that someone had been tank diving and then went freediving and got bent or SWB - I wouldn't risk my life to rescue that person - you have all the information, and from a legality standpoint, according to PADI, I have the legal right not to risk my own life to save that persons.
Sound harsh - Probably, but I am not willing to become a casualty due to someone elses carelessness...
Happy Monday...
