Even if the shifter/remote are attached to the brake lever, if you are switching to another brand of brakes, you can cut off the Formula brake lever and use the cut off section as a clamp. Then you can use any OEM brake system that you would like.
I got a right brake lever that was no good from my LBS and used the cutoff portion so that I could clamp my brakes independently from the shfter/remote and make the hand positions comfortable AND be able to actually see the control panel;.