It all depends on what encoding your server and pages are saying the content is encoded in. If you use unicode characters, make absolutely sure your pages tell the browser the page is encoded in UTF-8 (or UTF16, in the unlikely event you should opt for that).
If your pages state they are encoded in e.g. ISO-LATIN-1 or so, that that character is a liability and likely to blow up soon rather than late.
If you let browser guess what encoding to use it's even worse: you cannot predict it anymore and the order of what they encounter becomes important and the like.
Aside of that, if you type it or use a htmlencoding to represent it isn't relevant anymore for a modern browser.
Bottom line go for it. But DO make 100% sure your html is sent clearly indicating it is encoded in UTF-8, or it'll not be safe.