I can't for the life of me remember the name, but a guy recently posted a very promising looking add on that essentially put DT shifters vertically and pointed downwards on the brake lever. It looked like a very good option...but for most people I think STI/Ergo would make more sense. I'm not able to use STI/Ergo because I wanted to have full size v-brakes.

If I had it to do all over, I'd probably have used STI and cantis (even though I LOVE the v-brake with drops combo). You have to give it this - it's a unique rig