First off, I would never go BBFS with a provider and I would not see a provider who went bareback with a client.  But you raised an interesting point about GFE encompassing BBFS.  
I saw one of those crappy specials on MSNBC about a year ago (maybe longer) in which they discussed the "erotic" section on craigslist and how GFE was a code-word for a provider willing to go BB with a client, usually for an increased charge.  Of course they used this to paint a horrible picture of the hobby, but it had me wondering ever since then, if GFE in other parts of the country does mean BBFS.  I have never heard it tied to GFE, but I have never hobbied outside of Texas.  Food for thought from a weary mind about to go to sleep.  Good night all!