Have tried it twice, failed both times. Like Alex_Altair, I recognized problems and attempted to fix them, going so far as to have 24-hour surveillance during my second attempt to ensure that I wouldn't crash. The surveillance only lasted a week, and I started crashing as soon as I went off it. Typically, the transition period process is getting worse until you get better, and I just noticed getting worse. I strongly suspect that there's a biological flag which determines whether or not this can work for you, and it won't work for me.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.