Here is a link for the Banta thread. You'll be able to find out some info there.

http://forum.lowcarber.org/showthread.php?t=218433

As for low calorie cheesecake.. hmm.. I'm not sure. I would think that any cheesecake, just with the cream cheese ingredient would yield high calorie. I think you could sub Neufachatel (sp?) cheese and cut some fat. Have you tried the sweet treats forum?