Can I use a mixing valve as diverter

[Den333]

Installing a walk-in shower with separate shower head controls.

Using two Moen shower mixing valves from my local home depot, I will hook up the first mixer valve (Mixer-1) as usual: hot supply line to hot input (or side-A) and cold supply line to cold input (or side-B).
Here's my question- Instead of running the warm output of Mixer-1 up to the showerhead, I ran it to the "output" of my second mixing valve (Mixer-2). Then I hook up Showerhead-A to Mixer-2 side-A and Showerhead-B to side-B. Will Mixer-2 work to send water from one head to the other and both heads when in the middle?
I'll place them one above the other on the same wall. I'll place the temp controller (Mixer -1) on the bottom and the showerhead controller (Mixer-2) on top (installed upside down for ease of connectivity to Mixer-1).
Will it work?

 

[hj]

It SHOULD, although you only get individual flow from the devices when the second valve is at either end of its motion, (and maybe NEVER at the hot side if the valve is designed to ALWAYS mix some cold with the hot).