Some of the emo rockers are wearing it with skinny ties. DandySF is right. If you sport one make sure that it's done in a non-traditional way. If you wear one with a suit, don't clip it too high, just let it peep out a little bit.
Well... Tieclip is severely out of fashion. That being said, if you are to wear a tieclip, wearing it diagonally like you "don't care" just looks grotesque to me (this has to be some american trad thing, never seen that anywhere else). Here is how I wear a tieclip : high, straight, to make the tie puff a little bit, with a double breasted very high button stanced suit / or a vest (three pieces SB suit) Wearing a tieclip diagonally, on a low button stance SB coat looks even more dated. .luc
Has emo even reached your side of the Atlantic? If you have no idea what I'm talking about, consider yourself lucky. Though I must admit the emo rockers do have a more practical and imitable wardrobe than say heavy metal rockers.
Ever since the 1960s, I have regarded the tie clip as only a notch or two up from the pocket protector. However, Manton, whose sartorial wisdom and knowledge vastly surpasses mine, is an advocate of them. He pointed out that Fred Astaire was a great wearer of tie clips. I think Astaire invariably wore them at an angle. Thus I felt somewhat chastened. However, I still won't wear them.