I had a terrible experience with this product (yes, it arrived). Like I said, they refunded my order due to the delay, and fortunately this was not held by customs, so I didn't have to pay anything for it.
I received after almost 2 months later. However, it was 100% impossible to insert this thing into the Apple Pencil, and believe everything else, just DO NOT question this: I tried following all instructions and inserting as best as I could.
Either I received a bad sample or this company needs to devise another product instead of this one.
Or I am really awful to do this sort of stuff:
http://goo.gl/kJOQT9
This thing became stuck and couldn't go anywhere after a while, and once it was screwed up (my fingers are stil sore from the attempts), there was no way other than cutting with small scissors. I noticed it could only be inserted 60-70% at best.
I can tell the magnet worked fine and the grip is nice with it.
However, I wouldn't recommend to my worst enemy the experience I had today. I was really afraid of damaging the Pencil.
So my final advise is this:
don't buy unless you are absolutely sure you are going to be able to insert into your Pencil. What happened today reminded me of another terrible moment when I bought a screen protector for the iPAD (at the time, worth US$ 30) and attempted to do the same thing I did today (instead of paying someone to do it for me).
The thing was ruined and I also had to throw in the garbage. I was only able to save a very small microfiber cloth. But, in the case of screen protectors, everyone knows it requires some technique and it's not easy, or at least requires you to be very thorough.
Moxiware only instructs us with that short video, and that wasn't enough.