I think the concept is great. It doesn't affect my grip to the point where I felt like I had to take it off while playing for comfort. Unfortunately I removed it because as the day went on it became so loose and wobbly that I was afraid it would fall out. . Now I've found that unless I predict PS4 will be hard to type, it doesn't exist at all. Battery life seems good from the first charge and I've had it for two weeks. I would like the glow in the dark to actually be a backlight, and if you're playing long hours late and at night the glow doesn't last long making this feature useless. Another downside is feeling like I wish the buttons were more clicky. I ended up with a lot of missing letters or duplicate letters because I wasn't sure how to register them. I was hoping I'd have bad luck and would give it a try if you're on the fence. It really makes typing easier, I'm just more careful when I'm typing so I don't look like a first grader because of spelling mistakes.