This application will work fine as Eric demonstrated. I have done it with a Lionel 103 Electronic reverse unit and it works fine. They do tend to run slower because of the double diode drop, but run very well. You can chose to hold the field or the armature steady. Both methods work.
Not sure why someone would think a PW can't be run with TMCC? There is nothing fundamentally different from the early TMCC AC motors and a PW motor. Just add the capacitors.
The PS-1 board has far more capability then the Dallee, you can have an electromagnetic coupler function, plus all the sounds.
This can be done easier if you can find the QSI ACRU bottom board. It was meant for the AC motors, and I have seen them used to drive 2 motor units via a harness. G
