You could go either way on the first tier of raiding.
PVP gear is ilevel 450 with PVP stats IIRC. But you can get geared in heroics or from rep and you will have 463 blues or 476 purples. PVP gear is a fine filler for heroics, but ideally doesn't have a place in raids.
That said, if you can keep up with someone in 463 gear on the meters, then more power to you. That's why I mentioned a threshold for activity inside the raid, not just a gear-check to be able to queue. You should have to put time into getting ready to raid.
If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening.