I use several different ear-things to listen to podcasts. One of the nice things about podcasts is that they don't require much hi-fi, so I get to try out various cheap inventions that go into, aim sound at, or cover my ears.
Occasionally, I fail to hear something a person says to me because I'm listening to my player, but I always turn the player off and try to find out what I missed. I'm sorry that none of the ear pieces I have is called a banana. If it were, I'd always use it! Then, whenever somebody said something to me, I'd say, "I can't hear you, I have a banana in my ear!" (There IS a banana cell phone, however.)