Re: P vs PsF standard

Yep, the Varicam lays down 60 true fully progressive frames on tape per second. From what I understand (and correct me if I'm wrong), progressive video on tape is pretty new - in fact, Final Cut Pro doesn't really understand 60p, so you can't reliably edit it on a Mac.
From what I've see, I cannot tell the difference in these progressive formats. I've heard of some people finding [interlace] artifacts in 1080psf, but I have not first-hand. There is no doubt, though that the 1080psf offers more resolution - balance this with CineGamma (which I've just dabbled into), and I'd say the two cameras are very comparable. It really depends on what you want to use the footage for.
As far as 'uprezzing' 720p to 1080psf - I had some 720p footage frame-rate converted. The new format was 1080psf on D5. Then it was cut in FCP (which can handle 1080psf). Looked pretty good to me! I also went from 720p to 1080i to edit in FCP which also looked great.