VirusSixZero
Oakley Enthusiast
If you get the chance, try on Sylas. It's a slightly more conservative variation on Sliver. It just came out, so options are limited, but there is a Polished Rootbeer and Prizm Bronze option that is cheap by Oakley standards. You already like Sliver, it's just a matter of whether Sylas is dressy enough, while still being a plastic frame. It's definitely designed with casual wear in mind. I wrote a brief review of it just the other day here.