They look ok in my opinion, but as soon as I take like 5 steps when I go running, I may as well kiss them and $160 goodbye as the damn thing(s) will just fall right out of my ears.
I can't see them catching on, but then again I thought walking around with giant headphones looked odd but people seem to be happy walking around with giant Beats headphones on.
It does look like you've shoved a cigarette in your ear.