Jarrett,

How close are the positions between your Secteur and Roubaix? There is little reason why the Secteur shouldn't be nearly as comfortable as the Roubaix. The carbon frame and zertz don't do "that" much. Sure, carbon absorbs some road vibration, but that can be resolved on the Secteur through the use of a carbon seatpost, stem and/or bars. If the contact points are identical between the two bikes they should both be realatively comfortable to ride for extended periods. You might look at how wide a tire you can fit in the Secteur. Ideally, 32mm+. 28mm as a bare minimum for light'ish touring.

You already have two very capable bikes. Give one and two night credit card tours a try before you even think about investing in a "touring" bike.

Mrs. Fred, myself and another couple undertook a 4 day credit card tour of Australia's Great Ocean Road with all of us on "racing" frames. A combination of large saddle bags, handlebar bags, frame bags and medium size backpacks with hydration bladders worked fine for that. The only thing any of really had issue with was the heat and shoulder soreness of carrying backpacks. We averaged in excess of 80km per day and then, after a couple nights at the In-Laws house we carried on to Stewart Island and back with a couple 100km+ days.

Even when a frame doesn't have eyelets, there is little reason you can't add them through the use of "P" clamps and such.

We've also done two day trips on our mountain bikes with nothing more than a camelback each and a set of rear panniers on my bike alone.

Anyhow. Give touring a try, before you go running off to purchase a "touring" specific bike.

I can't believe I just recommended against N+1! I need to go check my temperature:-)