No. Not on my iPad, phone, or watch. If I was going to use one it would negate the benefit of the OLED screen, and these devices are plenty tough enough for regular use. The Logitech covers the screen when not in use.
I was tempted by the Apple one, especially based on the previous Logitech design with restricted viewing angles and the keyboard being face-down when it was tucked under to use as a kickstand.
But they changed the design to fix that issue, and it’s a step up in quality too. With Apple’s, if you want to not use the keyboard, the iPad is naked (whereas the Logitech lets you remove the keyboard and the iPad itself remains in a case). Apple’s generally felt more limited as a protective case, and is around £100 more expensive. Overall I didn’t see a benefit to it.