I am constantly doing it. I almost always use a headset and find myself chatting with people about what I'm reading. Really helps if you run out of topics and the other person wants to keep talking
Oh and I'm one of those weird Android users, so this would not affect me. But then it still wouldn't. I am one of those really odd AT&T users, but that's because they give good service in my region. But a third thing is I often use SIP over a tunnel as a VOIP provider. Works well on wifi and hspa+, but would also use lte for voice where it's available. Like it better than the cell line and AT&T has officially allowed voip for awhile. They just try and silently interfere with it, which I have low resource ways of doing something about.