I built a custom ti road bike with couplers that will be used for travel and touring where I do not carry my gear... although I can put 2 panniers on this bike. I've ridden it with one pannier for shopping and it would do fine for a credit card tour.
I am 5' 1" and I also have a carbon road bike. Both bikes are awesome, but the ti feels very smooth and plush. The bike is almost as light as my carbon bike. I don't have super light wheels and they are 700s, not 650s. I've been riding this bike quite a bit, so I am used to it for my trip in August. Anything I haven't liked about this bike was more related to things I chose myself, i.e. the bars, pedals.
I looked at real touring bikes and it didn't take long for me to figure out that I could never use bar end shifters. The bikes were heavy and kind of ugly to me. I'm never going to do loaded touring, and since I'm used to riding a very light bike, this was a great compromise. I use the bike for regular riding and, it can be broken down for travel.
That, and the fact that when I went to Harris Cycles, of Sheldon Brown fame, they were kind of condescending and were back in the Dark Ages, when it came to fit. I left there rather quickly.