I want to like products like this but I ultimately question the improvement versus actual pen and paper. I have a great notebook that I love, I found a pen that I love, and neither require power, take up much room, and have the best tactile experience possible. I can always use a computer whenever I need to get a lot of “digital” work done. Maybe I’m just not the target? But I do take a lot of notes frequently, just not annotations of PDFs.