I've only ever toured on a steel frame, but my set up doesn't need eyelets and weighs about $20lbs (25 with water and food) so I'm thinking of putting it on a Specialized Roubaix. The geometry is quite relaxed and it will take 28mm tires. I'd beef up the wheels, add a Brooks saddle and lower the gearing.....what do you think?

Here's my current set up and the Roubaix.