My goal is to find the thinnest possible rubberized finish for my Nexus One. I'm not looking for protection, in particular, just to keep the phone from slipping out of my coat pocket when I bend over or out of my hands. I saw a relatively expensive rubberized plastic case advertised as 1mm thick. Is that the best I can do or would one of those silicone cases be thinner still? I do care that the case not cover any functioning openings, including the noise reduction hole, and I do want a snug fit, but thin is my primary goal.