To chime in on this thread (and the couple others that have been here over the years)... Well, I went ahead and put in a order with Oakely, and I have to say that I am pleased with the product and the cost savings. I am 20/25 and went the RX route, no problems at all, and the RX sunglasses are of course ALOT better than the navy issue.
I ended up getting three pairs of glasses, one non RX sunglasses for wear with contacts ($70), one RX sunglasses ($170 total cost for frames plus lenses) and finally a clear RX pair ($170 total cost).
A lot cheaper than out in town, and better quality. Also, it appears that their list of what's available is better than what was stated in the threads. I wanted a specific clear RX frame, and it was on the new list they had.
Anyways, a big thumbs up, and I appreciate everyone posting this link over the years. Glad I finally got my act together and ordered them.
John