Sorry, I just saw this now but I wanted to let you know that this is not a TiVayder. It’s actually a D***Runner, made by @chaosgow. It was a another TiWalker inspired yo-yo that was made before the TiVayder.
Edit: This is my raw TiVayder, the nipple is flat (instead of slightly pointed), the transition on the inner wall is more rounded, and the lip on the rim is more pronounced. Plus it is numbered.
The D-Runner was inspired by the TiWalker where as the TiVayder was designed based on 3D scans of the TiWalker with a few modern updates including a slightly wider gap (4.5mm I believe) and standard 19mm pads. The TiVayder was eventually approved and endorsed by Heath Vizier, the original designer of the TiWalker and he ended up testing and boxing all of them for @codinghorror, who initiated the project.