Going old school: Cantilevers!

dabac

I've heard that some 'bent riders still prefer them.

Linear pull levers generally pulls more wire with less force than dedicated canti levers. If your hands are strong enough this shouldn't be a too big problem, although you will have to get used to a new rate of brake response. Simplest way would be to get adjustable brake levers, like avid speed dial, and to use the bottom setting. Running a longer link/yoke cable should slow down your brake response, but I haven't quite thought it through what else it would do to your braking ability. There are other angles you could tinker with as well to tailor the brake response, check out: http://sheldonbrown.com/canti-trad.html#yoke for more.
The extra-cumbersome way would be to buy a couple of travel agents and mount them in reverse.