Ruined my VR28 lens last season trying to clean the inside.
Don't wipe ANY moisture from the inside lens. The anti-fog treatment that Oakley's lenses go through has a special coating that is susceptible to failure if you somehow obtain moisture on the lens. It softens the coating and will fog/smear if you try wiping.
As a side note, if you were to accidently get liquid on the inside lens, let it dry naturally.
DRY wipe the inside lens using the supplied microfiber cloth bag or any micorfiber cloth for that matter. Make sure the lens is clear of any debris or dust before wiping too. The fog treatment is a soft coating that scratches pretty easily. I'de recommend spraying some compressed air in there first.
The exterior lens you can wipe all day long with goggle wipes and/or cleaning solutions.