Yes, I was only joking with the Vegas remark. I knew he was referring to this loan which is also marketed as the "Mortgage Accelerator", "Austrailian Home Loan" and other cute names.
It has been discussed ad nauseam on this and every other mortgage website. Beleive me, it's smoke and mirrors, the early payoff comes from throwing any disposable income at the mortgage, not from any real interest savings as the proponents of these programs purport. I don't want to take the time to type out a complete explanation so just take the word of the Mortgage Professor website who is about the most honest guy in the mortgage world. He says smoke and mirrors, enough said.