I'm going to preface this by saying I don't think any putting styles should be banned but if you are going to ban other anchoring styles it seems logical that this shouldn't be allowed as well. I don't see why they don't just make the rule that only your hands can make contact with the club when swinging and call it a day.
I'm going to throw a ticker tape parade when I finally break par over 9 lol can't believe how close I've been and haven't been able to do it. This is probably the closest I've came with great birdie looks on 6-9 and hit good putts just couldn't get one to fall.