Well I took it for a break-in ride this morning of about 20 miles. This is my first bike with bar end shifters, and I must say that I really like the ergonomics, certainly over stem or down tube. And I may possibly prefer them over the 105 brifters on my roubaix, though time will tell. This is also the first time I've equipped a bike with cross brake levers, and so far like that they give me more options for reaching the brakes in various hand positions.
About the only thing that is very different is the Radonneur style handlebars. They are the same width as the handle bars on my roubaix; however, they feel much narrower. Not sure if I like that yet or not--just different. I will say that they are much more comfortable in the drops since they flare out a bit.
Only thing needed on this mornings ride was some fine tuning of the saddle height!
Not only was it a great ride, the scenery was particularly nice this morning!