I'm the dude who posted the original thread, just with a different screen name now. Over the past few weeks I've been using the front brake exclusively. I've been using it on my commutes to work (11.5 miles one way) and I've been using it on descents as well as inclines. It works beautifully.

When riding on loose ground, or while turning, or when the ground is wet, I prefer the rear brake. Tends to be a tad more stable in my opinion. Every other scenario I prefer the front brake. I'd say I use the front 90% of the time right now. It's dry here in California.