Yes, always with a standard coil.Yes, I have heard similar accounts. Perhaps there are no obvious "problems" and the car will still go, but that depends on what coil you are running. If you are running the resistor coil it will possibly run just as well as the points dizzy, with the advantage of not having to adjust points. If you are running the hei coil, the coil would not be performing to the level intended to produce a superior spark.......the major reason for using an electronic ign/dizzy, perhaps even performing below a standard ignition.
Did you connect all these ignitions to a 12V supply and compare the difference,especially at higher rpm and wider spark gaps?
All the motors have also been standard except the EH, HP179 out to 186, cam and head etc, etc.
Still got the HP block and it will go in the Hatch when the old 202 craps out.
Might have to modify the wiring then, but for now i never have to worry about points.