I use mine, both on my phone and tablet.
I have a bluetooth headphone, but the hassle of dealing with battery dying out, then having to reach for my pocket in a crowded bus to put it back on the pod/charger isn't worth it. I nearly lost one of the pieces because it fell off my ear. Also, the only other situation where it'd be good, which is having it in my ears while I do house chores without the phone in my pocket, suffers from "wall interference".