Nah, step out of your box. I sometimes have been known to swim more than a mile to sea, on my own, alone from a beach entry. I generally do such dives by swimming on my back with my wing partially inflated towing my safety float behind me with flag etc. I like my mask popped on my forehead during such swims. It is comfortable and despite all the BS is very secure there. I can flip it down, roll over, view the underwater terrain and then roll back on to my back and continue my swim. If you were to do this with your mask down you would be uncomfortable quickly. I prefer to breath through my nose as well. You all the time mouth breathers may not understand but the only time I breath through my mouth is underwater or during high physical activity. I have never lost a mask or panicked as a result of having the mask on my forehead. I have never needed rescuing yet as a result of having the mask on my forehead either.
If it works for you then do it. No law says you can't.
Mask on forehead is comfortable, secure and functional way to store the mask while not in use and is indicative of a comfortable and secure diver who can adapt to the situation--as opposed to my "instructor said" sort of diver who always applies the same "think" to every situation and panics at the first bit of water on their face, help, help, save me, I cannot swim, I got water in my eyes, waaaahhhhh, waaaahhhhh---typical PadI sort ya know.
N