At the risk of repeating some of what has been stated here...
I have been using the VT Pro air integrated hoseless computer for my past 70+ dives. I wear it on my wrist, and it has made my diving much more enjoyable.
Why?
1) My gear is much more streamlined without the extra hose. I also have my backup reg integrated with my BC power inflator so I only have 2 hoses coming off my first stage. Easier to set up, less gear hanging, more streamlined in the water and less chance of causing environmental damage with the wrecking-ball spg that I see all the time.
2) All the important info is right on my wrist (no more reaching for the console). One quick glance and I can see everything I need to know, plus I get a reasonable approximation of my remaining bottom time- the computer calculates my remaining air, nitrogen saturation, and 02 saturation (if diving with nitrox) and gives me my maximum bottom time remaining based on the most limiting factor. Cool!
My computer has never failed me. Sure, occasionally the link between the transmitter and the computer goes down, but only briefly, and that's because of my arm position. Bringing the computer closer to the transmitter instantly restores the connection. 1 drawback: When I used a DPV unit, I had to power it down, otherwise the computer could not give me remaining air information.
I think wireless, air integrated computers are cutting edge, the technology has been proven, and there is very little chance of failure. And if it did fail, you would probably need to cut your dive short, and then during the surface interval either fix the problem or replace the transmitter with a backup spg, and go to your backup computer (which should always be carried with you during your dives so you have the nitrogen data. Small inconvenience in exchange for the benefits, if you ask me.
