If only there were a compact bar in a 26.0 clamp size!
Like this? I've got one on my Bianchi Trofeo, and it works well. The only problem I've had with it is that using the two-bolt Bontrager stem, it slips under hard braking. My solution is replacing the stem with one that uses four bolts. Alternately, something like Tacx carbon assembly paste might help.
BTW, that bar is wearing Campy eight speed Ergos, just to bring this back on topic.