I have it.
I really like the new tips. The stock one and the one with even more friction are perfect for me as the writing experience feels so much more natural now. The new pen also registers light strokes much more accurately than the old one. The eraser feels great, but you do now have to flip the pen over instead of just pressing a button. I also gather that the new eraser has no pressure sensitivity, although that isn't relevant to how I use the pen. The new shape with the flat side really helps in locating the button which is a bonus because I had a hard time locating the old buttons by feel. Well worth the upgrade if you are a regular pen user and have any issues with how the old one felt on-screen.