I have been diving with the EXO on OC for about 5 years now and quite frankly hate standard mask now. I've been looking at the Divematics with integrated OC/DSV for my SCR. The years I've been diving with the EXO I would use a Sartek gas switching valve for bailout our deco and so for have never had to remove my mask in an emergency (knock on wood), but always dive with a spare standard mask and do practice ditch and dawns alot. I plan on using the same type system on the Divematics if I purchase it for OC bail out and emergency supply. I would be interested to here about more thoughts on the Divematics mask. I found the EXO a bit heavy at first. Thanks,
