Got some field and course time with my 177 GL's today. Both have the same PLH. One is blue with less dome, and one is pink with more dome. I have a little bit of OAT issues, but I did get plenty of clean throws.
Into the wind, these discs don't perform too well. You need to give them more hyzer, but even then they tend to be really touchy.
With the wind at your back, the glide on these guys carries them really far and still fly understable (pending on how you throw it, of course).
On hyzer, they both flip up a bit (the pink more than the blue), and end up fading softly as expected. I dont think I will throw them on hyzer shots that need a somewhat immediate left turn. These tended to fly the first 50% of the flight on a straight line while flipping up, and then slow down and start the left turn. I bet if I threw with more finesse, they would hold the left turn immediately, so it's not to say that they couldn't be used for that shot.
On anhyzer, the pink outperformed the blue. On a high anhyzer, they would both fly straight for the first half of the flight before turning right. Neither really faded on anhzyer, but if you don't give them enough they will certainly fade. While the blue was more stable (not by much), the pink was much less likely to turn into a roller when turned over hard. The blue would lose altitude faster, and as expected because of the flatter dome, and wouldn't get flat enough to have a good landing. The Pink is now my right-turning mid and the blue is my neutral mid.
Overall, I know I need more time to learn them, but I'm stoked to add them to the bag.