I have it on both LD and DVD (it was included on the same DVD that had episode 13 and 13.5 on it... the [!] disc. The LD version came by itself on a single LD with nothing else.
Back in the day, when Pioneer LDC USA was releasing the Tenchi DVDs, this was a major annoyance for the US fans, as this was one of the HUNDREDS of omake video items that were not provided, and since this was the one everyone knew about...
I plan on compiling (about half done) a complete Tenchi FLAC collection (more than 100 CDs) up here. I am, at the moment ripping the clean openings, endings, and the Sound file, to include in it as additional video. However, I have to get it approved, and it will most likely be the largest FLAC torrent ever on BakaBT.
Right now, the size is 11.5GB, and I have to figure if I'm going to include the spin-off material, as well.
So, if you can wait a little while (I have to scan ALL the booklets for this, and that's going to take quite a while, just by itself), it'll end up here.