DG,
After watching the alignment golf dvd's and the putting section, I decided to experiment with the vertical hinge and putting. There was something about a clubface that was essentially staying perpendicular to the target line that seemed like a "no-brainer". I tried it with face-balanced, medium toe-hang, and 8802 style putters. They all could work, but they each will provide a different "feel" (though face-balanced seems like a logical choice).
My experience on the practice putting green was really quite good and pretty encouraging (for a mediocre putter like myself). I spent a few hours over a weeks worth of practice time before taking it to the course, and the on-course results were.......... HORRIBLE! I felt like I was steering an 18-wheeler when it came to putts that now had some "consequence". It really was amazing how "un-natural" it felt under a little pressure.
But, it was a nice exercise/experiment and it made me appreciate my angled hinge that much more.
My 2 pennies,
CG