Whether I use/used an Pertronix unit, or use/used points, or if I used an electronic ignition (if a 6-volt is available): I would/do carry (in my "trip kit") an adjusted/tested complete distributor and "ignition-assembly-parts". including tested ignition-wires and tested/set points.

This is cheap "insurance/assurance".
No sense wasting time when far away from home (and, maybe in the rain/snow/cold/etc).

I never had a Pertronix unit fail (235/261 6v/12v), but I have had condensers go bad, and points go weird).
I think that I am now running with points in my Suburban.