Top critical review
YMMV - Could be good, not easy to apply
Reviewed in the United States on November 9, 2018
I'll start with the good news, this is sized correctly and does not impede the camera on the 3rd gen 12.9" iPad Pro. It also seems like it really is super sensitive, so it will still be possible to draw just fine with the protector on.
But, you need to install it in an ideal environment, which sadly I do not have. You need to be in a location where you will experience minimal to no dust. If one bit of anything falls as you are applying this onto the iPad, you will get a bubble that is impossible to remove unless you take off the protector. Even then, removing the protector is going to risk more particles getting under the protector, which is what happened to me.
I've applied similar protectors to phones, which are easier, but I found this difficult to apply on such a large screen.