I'll also suggest an alternative:

DT shifters with Kelly Take Offs -I love mine and they combine the comfort and ease of (almost) STI shifting at the handlebars coupled with the simplicity of DT shifters. Cables won't get in the way of the front handlebar bag as well. They also free up your ability to not be married to short pull levers -so long pull levers and v-brakes are easily done.

These are definitely my first choice of shifters for touring. If I was commuting mostly, I'd use STI as STI is just that bit more convenient.