Its not at all necessary, especially if your goggles are quite protective, but I might recommend a neck protector... I know rhino do them, cos I had to get hold of one for marshaling in... It's not at all pleasant being shot close range in the neck, especially if you're gonna be playing sup air, I have a scar from last august that just won't budge!!! You can get them for like a fiver or something from planet, and the plus side is they keep your neck warm in the winter! (Though get a bit sticky in the summer)
Sarah xxx