So there is hope for the visor! Good!
People told me I needed heated visor for riding in the cold.
Well, if you are not wearing glasses you can try without.
My glasses turned to ice - ice on glasses AND visor was not good!

I'm glad I do not have to wear my glasses all the time.
How the wind hit your bike and your face depends on the windshield on your bike, the bike, speed, and your helmet, and your position on the bike.
So if you are lucky you can manage without!
Me and my old and blue sidecar (mix of two BMW's and a lot of homemade parts):
Riding in temperatures below ca.-10c - (this is what happed in -20c to -25c last February):
A big windscreen helped me
My helmet; Schubert flip type
I have the visor open in the narrowest position
And (important!) I wear a mask covering my nose and mouth.
The mask made of soft textile (windstopper type) and it get wet from my breath - but after a while it turn to hard ice, and that is when I like it; hard and not touching my skin.
I get mist on my visor - I can not see! But after few minutes of slow riding with the visor open the mist turn to ice and I wipe it off whilst riding. Then I hope my mask freeze and get hard so I do not feel the wet mask on my skin, and then I'm ok.
(Riding in circle at a petrol station with a sidecar, not able to see, in February; -why do people stare?

)
It is possible to make a heated visor, but it is easy to do it wrong and toast it...
I want to buy or ride without!
For more useful (or not useful) info about riding in the cold; search in my posts. And ask me - I do what I can to help!

Liv.