I tried those ArmorSuit screen protectors and they were awful. Having to spray the screen protector and my fingers for application was a pain, and even after doing all the steps exactly as detailed, I could never get the corners to stay down. I went through all six of the included protectors in a few weeks because every single one of them started coming off at one of the corners eventually.
I ordered the LK protectors to try a different style, and they are way better. No spray, the edges stick down and stay stuck down, and I can't even tell it's on there in most lighting. I've had one LK screen protector on my watch that's lasted as long as all six of the ArmorSuit ones, and it still looks like it did when I first applied it.
Don't waste your money on the ArmorSuit ones imo