You guys! I was lazy and didn't want to fire up the KK to cook one silly baked potato! Went into the convection oven, simpler!
FM, the CI article that went with the recipe talked about those variations (except using the grill part) and why they didn't think they worked as well. Oiling the skins at the start inhibits the cooking process by trapping the steam inside the skins, leading to less fluffy results. Adding the oil for the last 10 minutes only was considered the best compromise to fluffy interiors with crispy skins. The dunk into the saline solution was also chosen over trying to get the salt crystals to adhere to the skins. As the water evaporates it leaves a thin film of salt on the skins that doesn't fall off so easily, but gives enough salt to be noticeable. Just quoting the CI article. YMMV