dave m
Oakley Enthusiast
I had non Oakley lenses in my first pair of rx oo's 13/14 years ago, at the time the lenses were still made in the US rather than Ireland and they were quoting 4 weeks, I only use mine for reading and pc stuff so as you say it's less of a concern on the flatter lenses but i'd be concerned about them being able to get the prescription correct on the more curved frames irrespective of the durability of the lenses.