Further reporting: Here you can see road illumination using only the fogs on my drive home last night. They basically have the range of low beams, but are much wider (and these are yellow, obviously). It's a pretty solid option for bad weather driving.
(Note: I've since aimed the driver's side down a bit more. No one flashed their brights at me, I just feel like they throw a lot of light and want to be courteous.)
That is some impressive performance! Just to confirm, you did get the "Pro" version, correct?