The Rubi lockers use a separate switch to detect the lockers true position (locked or unlocked). In other words voltage applied to activate the locker (connector on top of pumpkin) does just that, it activates the locking mechanism inside. The other switch that detects the true position is on the LH slide of the front pumpkin. You can route that switch's wiring to another dash switch (or relay if you're clever) to manage the dash lights.
I have done this for testing purposes. It worked, but I was not doing the same thing as your are. ESP uses the lockers true position to make decisions on how to handle ESP events. Remember, if you fool the system into thinking the locker is NOT locked when it is, ESP will see events it thinks it should correct. Likewise, if you're driving on the highway and ESP thinks lockers are still engaged, I cannot predict what it will and will not do. Limp mode seems likely.
Just make sure you give the computer correct info on the aftermarket lockers true position, and it should work as if the Rubi locker is still on-board.