Not to be pedantic but you're actively comparing filtration performance on a roller that is 5x finer than your sock. 60 micron is vastly superior to 300. I think the comparison is cool, but you should focus on pointing out the other benefits of a roller system such as frequency between replacements compared to socks and then analyze cost vs reliability to really give an interesting perspective. Right now it feels like you're comparing the filtration effectiveness of a coffee filter and a fly swatter.