After two wearings and two washings, the silicone heel grips are nearly useless, I've had to take my shoes off twice today to pull the heels up on the socks, and at one point contemplated either throwing my shoes or the socks across the room to help alleviate the issue. If I were just wearing socks this would not be a problem, but sadly modern standards of acceptable dress in the U.S. require shirt, shoes, and everything else is really optional. Silly really that places don't require pants.
Seriously. how many times have you seen "pants required" on a store door? Sure, I get it, it's a law (in most U.S. states) but this is silly.
Comparing these to the MS&Co. Loafer Socks (v 1.0, without heel grips) they perform about the same. I can say the fabric has a better feel than the MS&Co. socks, however, it seems too elastic and could do to be more resilient after washing.