I have found the Continental Tour Ride to be a really awesome tire for semi-loose stuff. I have 32's on my fixed gear rather than my loaded touring bike, but it's proven itself on overnights. They handle very predictably on dirt, packed & loose gravel and even dry river rock. Tread is a little deeper than the conti top contacts that I use on my heavy tourer.
What are you planning for the Yak tire? The stock tire/tube? This might be a non-issue with whatever you've got, but if it's the same as what's on their website, make sure you bring a pump that can fit both schrader and presta tubes, if your rims aren't drilled for the schrader width.