No offence, but maybe you could work on getting comfortable without a mask. It's not much different than diving in very bad visibility, and if you freak out without a mask and lose control of your breathing and buoyancy control, you might run into problems.
No offense taken....for 25 years I trained divers....mask removal [R&R] underwater was mandatory skill without panic...we still practiced buddy breathing and in OW did that with and without masks on both divers....yes, learning to relax in unexpected situations and sort them out is a requisite to becoming a safe and self-sufficient diver [self-sufficiency seems to have fallen by the wayside]....just my take, but fewer "skills under stress" are taught and more reliance is placed on adding more gear...
This is not about military vs non-military diving.....masks are required and loss of a mask disables the diver, whether at the surface or underwater....I am not trying to coopt anyone's choice to dive in any configuration or mode they choose; firm believer in personal choice and accountability....
My divers were my responsibility and there is no substitute for correct training and scrutiny of skills to keep them safe. Not all persons who want to be divers can make the cut; nor should they for their own survival and that of others.
Can and should a diver be able to function without a mask? Of course. But to invite the loss of a mask by placing it on the forehead or back of the head defies common sense. Fine for Instagram poses or for identifying with a group, but not if you want to remain fully operational to dive.
Hard won lessons over the decades should not be discarded unless proven to be ineffective; dropping the mask around the neck insures mask retention, on a boat or in the water, and is effective.
Individuals should dive in a manner they choose, but please don't introduce or espouse diving practices that could result in placing divers in harms way. Loss of mask, even for an experienced diver, disables the diver and can start an unexpected negative chain of events.