I like the right. In addition to having read Sheldon's article, I think I switched after I did a longish offroad descent on a touring bike, from the hoods I think, and my left hand was starting to cramp up. I do feel a little better about having my dominant hand control my dominant brake.
Funny enough, I also switched the bar end shifters around on my touring bike, thinking that would be logical. I realized this was weird/silly when I realized that you could absolutely not switch around integrated brake/shifters. Going to put the bar ends back to normal the next time I retape that bike. It takes me a second switching between the two.
I had a mechanical before a group ride this last weekend, and I was lucky enough to be loaned a bike (a nice Specialized Roubaix, my first ride on a carbon framed bike), and it really took about 30 minutes for me to adapt back to left=front.