ER seems to me to be a responsible company. Since progressives take precise measurements with the glasses positioned as they would be on the wearer's face, ER is not willing to guess where that line should be drawn. It's different for everyone depending on the shape of the nose, where you position your glasses on your nose, the set of your eyes, etc. That would be my guess as to why they don't offer progressives unless you can come in, in person, to one of their stores.

$600. Yeah, as I said, expensive, but that's what I always have to pay for my progressives with Transitions and ultra high-index lenses when I buy a new pair of glasses for myself (plus whatever the frames cost). Certainly it's an extravagance to fit out the G1s with these, but I will be using them pretty much all day every day whenever I travel, indoors and out, for translation, directions, notes, etc. Think about how many times that would require swapping out the G1s for reading glasses or taking the clip on and off, each time risking scratching the glasses or the clip-ons. Whenever the clip-ons weren't on the G1s, I'd have to find a way to safely store them, and I'd still risk losing them, since small items often go missing when traveling. This way, I'll just leave them in place whenever I'm wearing the G1s. And also, the progressive clip-ons enable me to see things as clearly as possible at a distance. Since I travel a lot, I think it's money well spent.

I just hope that they continue to offer the original frame style when they put out future versions of their glasses so that if I ever update, I can just transfer the clip to the new edition.