This (made in England) tube mod is 4 years old, and still vapes like a champ.
It fell out of my duck blind a couple of years ago, and spent a week in the mud at the bottom of Ogden Bay. (my dog found it for me)
See how your "Obviously a really good quality VV/VW mod should outlive a battery" does with that!
Sorry, my apologies... I worded it badly. I said a mech can last forever, maybe I should have started with that comment. I was referring to folk who buy cheap VV/VWs (including me) on the premise that they would replace the battery when the battery dies and the mod will still be good.
But I suspect you realised this but wanted to make a point. So, I thank you.