Goggles are great with dust, and i find my fullface doesn’t work well with glasses, but I’ve never got the open-face-and-goggles thing. Tried it, didn’t think it did anything better than glasses, and obviously quite a few things worse. Sure, goggles might keep more mud out of your eyes but with a decent mudguard that becomes a nonissue anyway (In bad weather I often race without glasses or goggles, but with my enormous mudcanoe guard, because it stops rain on the lenses being an issue)
But! Today I got caught out in a crazy burst of snow in the pentlands, and man what I wouldn’t have given to have had my goggles with me, I was pretty much blind. I saw one very enduro looking dude riding along the river path and was tempted to mug him.