Take a look at the pic and let me know what you think.
It depends.....
It could work very well, but it will depend on the diameter of the microphones and the size of the microphone heads.
It could hold them too far apart, or too close.
My preferred method is to use a Rycote INV-7 or INV-7HG with a pair of the Rycote back-2-back clips. This works perfectly.