Roll Control Question?

I have done quite a bit of research and I noticed some people put the control solinoid after the diverter valve, between it and the front brakes.
(which the directions show)

Also saw a lot that put it between the master cyl and the diverter valve, and had no issue's with it.
Seems like the brake warning switch would interfere with the brakes holding if it decided to move the switch after the brakes were set.

Now it seems to me the best would be to put it between the valve and the calipers with nothing between them, but I'd like to put it up by the master cylinder.

Got any thoughts/experience/ramblings on this?