Isn't the bottom line ......whether or not you're willing to take a chance on injuring the animal or not......regardless of your head choice? Aren't both head types going to be deflected/affected if they make contact?

Its really then.....an ethics question on whether or not you'd chance it.

I say it depends on the opening. I've taken a shot through an "opening". I've turned down SEVERAL that didn't have one.