3D preview was one of the feature unlockable for patrons. It is him who copied my models - not the other way around. I 've been using them for months as the main marketing point https://twitter.com/rezoner/status/1113383162669948929 - if u have followed him more closely you would notice that he removed that tweet where he accuse me of stealing his models right after people proved that it is HIM who took my models :)