I played a full round today at my local course using only the Glitch. My closing thoughts on the Glitch very much mirror my initial impressions of it.
I don't think it's a good golf disc, and I don't see much use for it (at least for my game), outside maybe a very niche situation once in a blue moon. However I still think the Glitch would be an incredible training/practice disc, and a great catch disc/warmup disc.
If I had to describe the Glitch in only two words, it would be this: Brutally Honest
As I said before, I don't think I've come across a disc that's so dead straight, with absolutely no added fade or added turn to it. It has all the high speed stability to keep it pushing forward with no drift to it, yet it has no fade whatsoever. Naturally, these flight characteristics will change in very windy conditions. The disc will glide out on a frozen rope, never deviating even inches from its flight, when thrown flat. It will also hold the most subtle of hyzers or anhyzers if you throw it on one. It will show you exactly what angle you're releasing, it will tell you if you're throwing too low or too high, and it will also tell you if you're throwing too hard or not cleanly enough, as it just won't go as far. This is a great disc to show anybody what tendencies they have in their throws, for good or bad. It's also a great disc to work on your timing and smoothness in your form.
As far as actual golfing, because the disc has no inherent fade or turn to it, I found very minimal use out of it. There are cases in which you might want a very low effort slow, floaty and laser straight flight, but I honestly couldn't find much use out of the Glitch that I could get with a beat-in Pilot, or a powered down flippy mid.
There's very little shot shaping with the Glitch. You can't put it on extreme anhzyers to pan out, or you can't put it on slight flexes, or you can't hyzer-flip it. It just likes to keep the angle you put it on. In that same vein, I didn't find much use out of it for touchy get out of jail type shots like I would with something overly flippy that would flip up and ride more to my intended target. A beat-up DX Polecat works way better in this instance.
Approaches are its weakest aspect (IMHO of course). You have to have deadly aim to get it going at the basket, otherwise it's just going sail left or right on whatever line you put it on. Believe it or not, I also came up quite a bit short on little finesse hyzer approaches to the basket, where I would otherwise come up closer to the basket with something that flips up slightly.
Having inherent fade is very much a good thing I find for golf, because it gives you a consistent finish that helps mask super subtle mistakes in your release and line. This boils over in circle 2 putting as well. I found myself chaining out on the right-most chains of the basket, forgetting that the Glitch won't fade in like my Electron Pilot. You can't anhyzer flex putt it either to beat cross-wind conditions, because again it won't fight out of that forced turn.
To wrap it all up, the Glitch excels in what it does well, but otherwise is not something I would consider much of a tool for actual rounds. I will be using it over the next several months in the field though, to retool my form.