I think most signs are saying that it could be a TXQ...
View attachment 1741715
View attachment 1741716Compare the details such as the emitter, glasseye, diamond band, and length of the Gold Switch.
View attachment 1741718View attachment 1741719
And also another one like the seam on the pommel. The only other replicas have this seam are the Korbanth ROTSFlex/Knight AS3, 89sabers Skinnyflex, and the LGT/Damien. But as seen in those pics, the center band is chromed and not polished aluminum like the ROTSFlex/Knight AS3 or 89 Skinnyflex. And the other details match the TXQ better than the LGT/Damien.
It could be totally possible that it's just a completely custom prop. But why the seamed pommel? I also wish we had more shots of the bunny ears as well as clamp card, since the ears on the TXQ are more squared and clamp card is a bit recessed rather than sitting flushed like the regular ROTS Hero.