The Shark Performance article (which, btw, is written by me. The Shark version is the original one by me, written for Shark. You can find alot of copies of that same text all around the internet now) is pretty close on how it really works. Obviously its not 100%, but its close enough.
Unipatch itself is public knowledge, no need to hide that. If you have any questions, feel free to shoot an email to:
my first name @ unipatch dot co dot uk
Hope you appreciate the fact that I earn my living by developing this stuff, and thus wont necessarily share everything out in the open. I keep that as my prerogative.
Thanks alot
-Mikko