My Vaya is my daily rider/commuter. I run a Carradice saddlebag (with support), and it works well for my 24-mile (roundtrip) commute. The bike is sturdy enough for dirt/gravel riding, but with a change of tires, it'd downright lively. Not as nimble as my Black Mountain, but it's not designed to be.
You can read more about the Vaya, etc, on
my blog.