Cantilever brakes versus "direct pull" brakes

I am getting a touring frame (with S&S connectors) built to fit and now
we are discussing the use of direct pull (aka v-brakes) versus the
traditional cantilever brakes that i see on a LOT of touring bicycles.

I did originally purchase non-aero brake levers for the drop bars I
intend to use. Now i understand they won't be appropriate for direct
pull cantilevers. Any ideas on this? I understand Dia-Compe (spelling??)
has brake levers for drop bars and these brakes.

Comments? I have lots of time to get the bike built. This year is pretty
well shot (the leaves are just starting to change on some trees here in
Manitoba), but it has to be ready for next spring.

Ken