It's multi-sided design keeps it from rolling off surfaces like its round counterparts do. It is also slightly bigger than the average stylus which I find easier and more comfortable to use.
I thought that this would be really helpful with my iPad iPhone and work computer. The pencil design does prevent it from rolling.. good. However those angles are a bit uncomfortable to my hand. I find I want to hold it like a pencil but I have to tap three or four times to get it to work unless I’m holding it straight; not angle. I wish manufacturers would design a link or hook; remove the worry of losing it.