Thanks for the reply. I am not at all concerned about added weight or difference in feel, due to adding S and S Couplings to a carbon fiber bike. My big concern involves using a carbon fiber bike as a travel bike because I keep hearing people say how fragile carbon fiber bikes are and even a Calfee sales rep told me I would be better off with Ti if I wanted to get a bike with couplings that I could travel with. I have a Trico Sports Iron Case and hate paying anything extra to carry it on domestic flights (never been charged on an int'l flight).
Calfee will build the bike with "S and S Couplings" in it. Although I suspect they build a "regular" frame and then cut it. There is a great table on the S and S Machine website that shows all the bike manuf.'s that will build a bike containing their couplings or bike brands that can be retrofit. See http://www.sandsmachine.com/fbplist.htm
I didn't realize that the S and S Couplings leaked water into the bike if it rains!!! I have to ride alot in the rain where I live. Did you check with Calfee on that???
Also - why do you have to take the cassette off when you pack it? Could you just wrap some soft cloth or something around it?
Finally, do you have to pad the frame over the cable couplings for riding the bike? Or just when you pack it? I know 2 people locally that have the S and S Couplings on their Ti bikes and they haven't had either of these problems.