I came to find the BR heads seem to hold tighter to the post, you actually are more likely to pop the adapter off the body than the head off the adapter.
Fortunately, I had a spare post and since you don't see it, I put that on my v2 head, left the BR head on the BR post and the v1 head on the v1 post.
Whatever you do with the heads, easiest thing to do with the BR heads is just leave them on a post and swap out the whole thing if you want to change them.
I was surprised by the clown mask being soft rubber, I was expecting hard plastic, gets a much nicer fit to the head this way though.