"The glasses will start at $499 with the option for prescription lenses at an extra cost"
If that turns out to be true I might be tempted.
Assuming it doesn't add too much weight or reduces visible over my normal prescription lenses.
I have two bets:
a) the prescription option will be astronomically priced. Think $399 for basic lenses just to start. Another 400 for progressives, 200 for AR coating.
b) Prism won't be available.
c) Progressives may not be available.
d) Getting lenses anywhere else will be unsupported.
Oops. I can't count.