Gotta use some brains because gaze converted, so sometimes it worked vs phys immune, sor wont You basically have to adjust what attack you use to immunity your enemy currently has.
Honestly I think this version might even have some advantage, sor has this velocity/defense debuff, high WDM, it is really not bad skill. It is pretty bad for speedfarming, like with decked char I wouldn't use it over sword spiral for example. But with entry gear, if your goal is to get charms it might be even better.