Bah, it's all personal style. I'm seeing a lot of people who want that whole "Demon" / "Goatboy" / "I'm evil, that's why" look. Then again, I do ears and a tail, so what does that say?
If it makes someone happy, go for it. It's a little style, a little originality, and it's a good way to see someone across the field when they're all wearing the same thing. I've seen guys do this before, and I'm still lusting after a muzzle I've seen a long time ago that was a resin full tiger face that was on a JT mask, but the company is LONG gone.
(FYI : The "Command post" folded as a company shortly after this ran, within a month)
All that being said, my ears and tail are made to "give" when a paintball hits it, so no breaks on costume. Resin molds don't quite do that.
-Tyger