I have just bought a new poc receptor bug helmet and i use my existing oakley crowbars but there is a little bit of annoying gap that sends cold wind into your eyes and forehead.
so yeah don't get them together
or if somebody has them together how do you get around it.
i have a receptor bug and crowbars. mine fit fine and dont feel any cold air on my eyes or anything. i wear my goggles under my helmet so if your not doing that already, then try that out