I don’t think that an insulated probe would completely disrupt the galvanic process. If the insulation isn’t covering most of the probe, you should still generate a decent amount of lye in the follicle, and this should damage the stem cells if it rises closer to the opening of the follicle. I imagine that using an insulated probe for galvanic might require a longer exposure time to generate the same amount of lye as a non-insulated probe due to a smaller surface area.
Given that most galvanic operators would be doing multi-needle and using non-insulated probes, I can’t imagine there is a lot of practical experience we can lean on here. The use of insulated probes with galvanic is more typical of blend operators.
I believe that the IsoBlend probes have less insulation on them compared to the insulated probes designed for thermolysis. Maybe this allows for just enough surface area for the galvanic to do a decent enough job. I think you’ll know for sure in about 9 months.
As for your question around less discomfort and redness meaning less efficacy, it’s not such an easy answer. If someone walked out of a treatment with flawless skin, I would question whether the electrologist even turned on the machine. If someone walked out with their skin looking really beat up, I would also assume the treatment wasn’t as effective as it could be.