Fashion Statement or Being Warm?

Looks as if the Ugg craze isn't going away for awhile and the question is: Do I get a knock-off pair and be warm this winter (and look absolutely ridiculous) or do I continue the way I have been for years (sneakers or, at most, hiking boots)? I'm still not old enough to totally not worry about how I look, but I really like to be comfortable, so I'm getting to the "hell with fashion" state of mind that comes with getting older and wiser. Maybe if I could afford a REAL pair of Uggs, then it would be cool to be in fashion. Have to think on this.