I feel like this is probably a really dumb question. I just switched to a VT-4 for a trip to FIJI. I want to have a backup computer. I have been considering selling my Cobra2, which works great, and has the QD. Can I dive with the computer not hooked up to an air hose, i.e. in a BC pocket or clipped to a d-ring? I don't know if having that connection exposed means I will flood my computer? Thanks in advance.