Seems like a waste to me.
My sump originally had 6 sock holders. I hated it, so I recently cut a piece of glass that covers 4 of them. With the remaining 2 I use 1 sock, and 1 filter holder that holds my carbon.
Using 100 micron socks, the 1 sock fills up basically daily. If for some reason it didn't clog up in 1 day, it will by day 2.
So that means I'd be looking at 30 socks a month, and that is assuming it worked as well. If I go down to 200 micron socks, they'll last 3 days, but they don't pull as much out. So that's 10 a month at 200 micron.