Hey there,
I took the leap. I wear prescription glasses underneath my goggles and fogged up like a MF.
Short answer to the question of functionality: yes, they do work.
Are they 90£ worth of anti fogging goodness.. Hmmm, I played for 4 hours straight at the mill in Wigan and they fogged up once whilst stationary. However, not as much as my goggles used to fog up and it was to the point where I could see and my red dot was a lil blurry.
So if like me and others on the thread: you wear glasses under goggles and you’ve simply had enough of fog and walking back to the safe zone (and got 90£ burning a hole in your dump pouch) then yea they’re worth it.
I was sceptical, yet proven wrong. Overall good product and just by the skin of its teeth worth the investment.
If anyone wants to see the set up I’ve got and how I use them just let me know.
Ron