It seemed fairly obvious to me that the fire-grab premise was merely a tongue-in-cheek framework for the discussion of our three favorite wearables. I doubt very much that in the case of an actual fire, you or anyone else would save clothing first.
It could be mechanical and inexpensive. With a Seiko or Miyota movement, the price might jump maybe $75. Love the design.
Junk straps are to be expected at this price point. But as you note, decent quality replacements are widely available.