Wellllll Greg, after I read threads that are about “convoluted” DCC problems - in two different languages no less, one with 125 posts and the other one with 74 posts - and everyone seems to have forgotten what basic troubleshooting is all about, then … I gladly add the red lines that lead right to the insulation gaps. Even though they are obvious to anyone who has ever looked at a handlaid turnout that is DCC friendly or even just the schematic of one 
I’m pretty sure the dual FrogJuicers will work just as intended in my staging yard, even with two or more engines moving at the same time. 
BTW in my view the DDC-friendly setup has only one item that differs from the “usual” DCC routine. That is the frog which, by whatever means, changes polarity according to the position of the point rails. The rest of the wiring is just common sense to avoid complications on account of incorrect wheel gauge or derailments “in exactly the wrong spot”.
PS And one more variation on the theme how to power a frog http:///html/mk3_throw.html Works ver nicely; the toggle spring together with the toggle switch holds the point rails in place and a piece of doweling provides the “high-tech manual actuator”, no bending down to throw this, that or the other and it will reach across the elevated sections to any of the turnouts.