I just got these key caps on my WASD keyboard today. They are pretty good, but they are my first set of key caps ever, so I have no clue what to compare them to. I have not experienced any kind of fatigue yet.
They are not as textured as I imagined PBT would feel after reading all the descriptions by other people who are big fans of PBT. Hopefully they won't shine, or I would have wasted a ton of money when I can just get ABS.