Having read all the various posts about dedicated stripping tools, pliers or side cutters, of which I have various examples collected and used over the years...
There is one method that hasn't been described in the posts as far I can see for side cutters, to strip ready for termination.
I was shown this method at college 35 years ago, it has stayed with me, is simple, quick and effective. It works for all types of side cutters with insulated single or stranded cores to 2.5mm.
(my preference is for smaller Lindstrom flush-cut cutters for smaller thinner gauges, because of the work I predominantly do)
The method is a variation on squashing the insulation, perpendicular to the core but only sufficient the crease the insulation without getting close to deforming the conductor.
Next use the cutters to nick the insulation at the edge of the crease line to close to the conductor. This effectively puts a cut in the insulation allowing it to part easily. Put the cutters back across the cable on the crease line, apply firm pressure, just a little more than you did to crease the insulation allowing the cutting edges to bite in, but not enough to catch the conductor and while maintaining this pressure push the insulation off the conductor.
I hope that makes sense. With a little bit of practise, it's as quick as an automated stripping tool.