If being transported and until gearing up my expensive Atomic Frameless or Scubapro Frameless prescription masks go in their plastic boxes inside a neoprene bag. Once geared up and I am staged but not about to dive yet, on my forehead glass forward where I have worn my masks for 50 plus years without incident. A mask will not fog worn forward anymore than worn goofy (backwards) and in a split second the mask can be pulled onto my face ready to go. When ready to Dive, Dive, Dive, be it from boat or a shore/surf entry, the mask is on my face where it belongs and regulator in my mouth. I reverse coming out. Between dives I place the mask either back in the neoprene bag or hook the strap over the yoke knob and pull it forward under the inflator. I had a mask crushed leaving it in a fin pocket, the fins slid out from under the bench in rough water and the fin was stepped on by another diver breaking the lens. That was really a freak thing though. N
