So this is the only other real obvious point in the art of this one comic where there's clear use of inserted vector art (RD in panel 3, Scoots in panel 4), but nowhere else, and the rest of the style Nicoletta has is far off enough from stock vector that these scream to be out of place. As I had suggested on the case in the preview page, these look like last minute additions at editing, and not some Nicoletta did purposely.