Omega single driver speakers

Has always been using speakers with multiple drivers and like sonic signature of Sonus Faber, Harbeth and etc, I started wondering whether I should try single driver, crossover-less speakers such as Omega CAM in my second system.
 
This is for chamber music, piano solo, and vocal (popular) in a medium sized room (16 x 40) with a low output tube amplifier. The speakers will be placed alongside the long wall, about 10-12 feet from my sitting position.

Any feedback on Omega, especially CAM? Thin or full sounding? Bass enough? High freq beaming or satisfactory? Warnings and recommendations (including other brands) are welcomed.