No, not really. All of the artificial harmonics I heard were perfect artificial harmonics. So it comes with the squeel and heavy vibrato. I'll try to listen for it though.
Also there is this other technique that uses a natural harmonic the artificial harmonic way like putting picking hand over 24th fret then then pinch it or however you do then grab the guitar by the back of the neck then push forward slowly so you dive and your artificially Natural Harmonic gets deeper instead higher and squeely. Takes a little bit too get used to doing it though.