If you're a man it may give you a bikie look or a hippie look. I think it's fine. I think you should just wear your hair however you want it. If people say stuff they're probably stereotyping you as something you may not be. If your a women, it doesn't matter that much, I think one at the back would be more suited but really depends on what you look like and what suites you more. I personally think it's up to you.