For those of you wondering what the new Indivision will be like, this is what I heard back from Individual a day or two ago:
"A new version of the device is planned for Xmas business of this year. Even the old ones are compatible with the Rev.2B motherboard and HP Lisa chips. The only known unresolved issue we have is with Rev.1A boards. We just recently resolved an issue with Rev.1B boards and we have one of those Rev.1A boards on it's way to us, so we can make the new unit compatible with the whole range."
Also, I have that 15KHz adaptor from ebay you're talking about, and it does work ok, except for the vertical lines, and it has this big issue where it often puts the fields in the wrong order (interlaced modes only), and changing the screen mode back and forth fixes it half the time. It's a big pain.