Sonic CineVision.... What's the word on the street?

Hi folks,
I'm in the closing stages of a professional training DVD project and a client asked me about HD/Blu-Ray DVD delivery. Our material was all created at HD spec for HD playback, however that was for long term compatibility and longevity. They mentioned HD-DVD at the initial client meeting, but thus far we've not solidified the desire to deliver on HD-DVD just yet due to the overwhelming saturation and immediate availability of standard definition DVD players. I've heard a few names that are presently supporting both HD and Blu-Ray DVD encoding, but I've only seen a few that look refined enough for a klutz like me to use. Here's what I need to know:

1. What's the general discussion regarding the Sonic CineVision encoding software package?

2. Would I have to shell out the cash for Scenarist as well or would these encoded files be at home in another software package? I've used Scenarist a time or two off-site, but we'll most likely be using DVD Studio Pro -or- Adobe Encore for our authoring and organization. I'd assume that the standard would make the files transparent to the authoring tool, but I'd hate to make that guess and be wrong.

Thanks so much for your time.

Here's a link to the software in question.
http://www.sonic.com/products/Professional/CineVision/quicklook.aspx

Michael Munkittrick
Gainesville, Florida USA