Back when I mixed Atlas and Ross turnouts on modules I would always use a Ross turnout at module seams and trim as needed.
Now all I use are Ross switches. I find that I could slice through Ross turnouts at module seams without problems.
When ever I shorten Atlas switches the abbreviated rail pieces seem to easily roll out of the spike heads without much strain.
Have not gotten around to installing the tortoise machines on my Ross turnouts as yet. They are left to be thrown by traffic. The track plan is a 75' long return loop to return loop dog bone with a 16' long passing siding in between. They safely run both ways through all turnouts throwing the fully floating Ross points on a very regular basis.