Yes, my glasses also fog up!Opening visor while stopped did little to keep glasses from fogging..
might have been different had lenses been plastic, don't know as i've always had glass lens version
Zeiss makes a spray for anti fogging. I use it - it's amazing!! I'm just not sure if I should try it on my plastic visor.
But all in all, I would love to have something that works all the time without maintenance.