One of the things I (and the pros) try to do is to try to leave myself the best shot at birdie / par that I can. That usually means leaving myself an uphill putt. I would never try to leave myself a downhill putt. But the premise is that the downhill is 1/2 the distance but on the worst slope. I'd never want that. We have some nasty slopes.
There is one course I play that has a drop of 10 feet from one tier to the next with nearly a 50% slope. They've put the hole right at the base of the slope on the lower tier. If you're on the upper tier, goodnight Irene. And visa versa. They have the hole right before the precipice. Talk about a frightening putt!
No video, but had a really good lunch time practice session today. Keeping the right elbow in front, shoulders soft (although to be honest, this one is tough for me - I still don't know a feel for this), then the "draw path with cut pivot" idea for the downswing. Lots of mapping followed by little "chip" shots, and then a handful of full swings at the end.