DONT use Virwox unless you need mega quick btc for some reasons. Their fees are simply a scam.
I don't see why would you say that they are a scam, sure they have high fees but they would most likely have to deal with the risk of chargebacks with no ID verification.
It's not a scam within itself but the fees are insanely high as far as I know. But yeah i dont know any other ways to avoid ID since most sellers in Localbitcoins want to see your ID...